prove that hilbert's euclidean parallel postulate implies the converse to the alternate interior angle theorem

Answers

Answer 1

Hilbert's euclidean parallel postulate implies the converse to the alternate interior angle theorem since if α = β, then l and m cannot be parallel.

Hilbert's Euclidean parallel postulate states that given a line and a point not on that line, there exists exactly one line passing through the point and parallel to given line.

Suppose we have two parallel lines l and m, and a third line n that intersects both l and m, forming alternate interior angles α and β. We want to prove that if α = β, then l and m are not parallel.

Let's assume contrary, that l and m are parallel despite α = β. Then, by Hilbert's parallel postulate, there exists exactly one line passing through any point on n that is parallel to l and m.

Therefore, if we draw a line parallel to l and m through point where n intersects l, it must be same as line passing through point where n intersects m.

But this leads to a contradiction, because if lines are same, then alternate interior angles α and β are congruent.

Thus, we have shown that if α = β, then l and m cannot be parallel. This is  converse to alternate interior angle theorem.

Therefore, we have proved that Hilbert's Euclidean parallel postulate implies converse to the alternate interior angle theorem.

Know more about Hilbert's euclidean here:

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Related Questions

Which of the following expressions are equivalent to 4 + 36x

Please answer and dont take my points bc i am in a hurry
A
4(1) + 4(36x)

B
4(1 + 36x)

C
2(1) + 4(9x) + 4

D
4(1 + 9x)

Answers

Answer:

The answer would be D.

Answer:

The answer is D 4(1 + 9x) or C depending on what school website you use.

Step-by-step explanation:

5. What are the values of x and y?
O x=2sqrt3 y=4
O x=8sqrt7 y=4sqrt21
O x=8sqrt3 y=8sqrt3
O x=4sqrt21 y=8sqrt7​

Answers

Answer:

x= 90 degree

y= 43 degree

Step-by-step explanation:

We have been given an isosceles triangle being two sides equal AB and AC

By the property of isosceles triangle

The sides which are equal will have same base angle

Hence, ∠ABC=∠ACB=

We know that sum of angles of triangle is  

∠ABC+ ∠ACB+∠BAC=      (1)

Since, ∠BAC is the bisector so, ∠BAD and ∠DAC are equal which is  

Now, substituting the values in (1) we get:

Now, we will consider ΔABD to find x

,∠ADB=∠ABD=

Now, Apply the sum of angles of triangle is  we get:

Answer:

x = 8[tex]\sqrt{7}[/tex]

y = 4[tex]\sqrt{21}[/tex]

Step-by-step explanation:

use the altitude rule to find the height of the triangle first

12/h = h/16

h² = 12x16

h = [tex]\sqrt{192}[/tex]

h = [tex]\sqrt{4}[/tex][tex]\sqrt{4}[/tex][tex]\sqrt{4}[/tex][tex]\sqrt{3}[/tex] = 8[tex]\sqrt{3}[/tex]

now you can use the Pythagorean Theorem with height of 8[tex]\sqrt{3}[/tex] along with the other leg of 12 to find 'y'; which comes out to be [tex]\sqrt{336}[/tex] or [tex]\sqrt{4}[/tex][tex]\sqrt{4}[/tex][tex]\sqrt{21}[/tex]

then use the Pythagorean Theorem with height of 8[tex]\sqrt{3}[/tex] along with the other leg of 16 to find 'x'; which comes out to be [tex]\sqrt{448}[/tex] or [tex]\sqrt{4}[/tex][tex]\sqrt{4}[/tex][tex]\sqrt{4}[/tex][tex]\sqrt{7}[/tex]

Divide 9 by t. Then, add 3.
Which of the following expressions matches the statement above?
OA. t + 9 + 3
OB. 9 + 3+ t
C. 9 + (t + 3)
OD. 9+t+3

Answers

D.
this expression matches the statement.

Katherine has a fish tank shaped like a triangular prism in her living room. The triangle that forms the base of the tank has a base of 24 inches and a height of 20 inches. The entire tank is 36 inches tall. What volume of water is needed to fill the tank if the tank is only filled to 6 inches below the top?

Answers

Answer:

[tex]Volume = 7200in^3[/tex]

Step-by-step explanation:

Given

[tex]B = 24[/tex] --- base of the tank base

[tex]h = 20[/tex] --- height of the tank base

[tex]H = 36[/tex] --- height of the tank

Required:

Determine the volume of water needed for 6 inches below the top

First, calculate the area of the tank base.

[tex]Area = \frac{1}{2}Bh[/tex]

[tex]Area = \frac{1}{2}*24*20[/tex]

[tex]Area = 12*20[/tex]

[tex]Area = 240[/tex]

If the tank is filled 6 inches below the top, this means that the height of the water is H - 6.

So, the volume is:

[tex]Volume = Area * (H - 6)[/tex]

Substitute 240 for Area and 36 for H

[tex]Volume = 240 * (36 - 6)[/tex]

[tex]Volume = 240 * 30[/tex]

[tex]Volume = 7200in^3[/tex]

-3r+5r
What is the answerrr i need helpp :((((

Answers

-3r+5r=2r
This is the right answer

Answer:

2r

Step-by-step explanation:

2r is the answer because:

We have to switch the -3r in to +3r and positive + positive = positive.

Then we change the add sign in to subtracting sign and we subtract:

3r-5r and  it will give us:

2r

And we keep the answer positive  because our answer was a +5r so the bigger number keeps the sign  the same.

Help please
|2x + 5| = 11

Answers

Step-by-step explanation:

[tex]2x + 5 = 11 \\ 2x = 11 - 5 \\ 2x = 6 \\ x = 6 \div 2 \\ x = 3[/tex]

Solve for x: please help

Answers

Answer:

45 because an acute angle is 45 degrees

Answer:

22.5

Step-by-step explanation:

22.5 + 22.5 x 3 =

22.5 + 67.5 =

90

Hope that helps!

help me plz! The one with the correct answer gets brainliest!
What is the number for the variable "x"? : ( x+29= −11)

Answers

Answer:

x=(-40)

Step-by-step explanation:

x+29= (-11)

x+29=(-11)

  -29=-29

x=(-40)

Answer:

x=-11+29

x=18

Step-by-step explanation:

If = 58° and m = 120 in, what is the value of p to the nearest tenth of an inch?

Answers

Answer:

141.5 in

Step-by-step explanation:

sin 58 = m/p = 120/p

120 = psin58

120/sin 58 = p

p = 141.5 in.

Another way to look at this problem is to remember that the hypotenuse of a right triangle is the longest side.  Since 141.5 is the only answer greater than 120, it would have to be the logical choice for the length of p

14 Customers into the store over the course of seven minutes how many Internet store after one minute

Answers

Answer:

2

Step-by-step explanation:

14 divided by 7 is two customers in one minute

Answer:

After one minute there will be 2 people inside the store.

Step-by-step explanation:

First we put this into a proportion. Aka set up like a fraction.

14 (customers)                 x

-------                 --->         ------

7 (minute)                      1 minute

In order to find x, we must divide by 7  because in order to make the bottom number one on the bottom, you must divide by 7 , so we do the same to the top.

14/7 is 2.  

This means that per minute, there are 2 people inside the store.

After one minute, There will be 2 people inside the store.

                   

m> 32
Which of the following could be a possible value for m?
32
33
100
n 31

Answers

33 and 100 are correct. Both are greater than 32
The answer is 33 and 100.

Because it says m is larger than 32. It can’t be 32, the sign is only larger than, not larger than or equal to. It also can’t be 31 because it is smaller than 32.

A translation is shown on the grid below​

Answers

Answer:

translation of ABC to A'B'C' is 5,3

a dealer sells a camera to a man and makes 15% profit. The man sells the camera to another man for 414$ with 10% loss. Find the original cost of the camera.

Answers

Answer:

$386.75

Step-by-step explanation:

First we must find the price of the camera after the man sold it, with the 10% loss.

To do this we find 10% of 414, which is 41.4 . Meaning the camera was originally bought from the dealer for $455.40, as we have to add the 10% back onto the price.

Now we find 15% of 455 and subtract it, with 15% being 68.25, the original cost was $386.75. My guy was seriously ripped off :(.

Orignal price: $386.75

A bag contains 11 red M&Ms, 8 green M&Ms, and 6 blue M&Ms.What is the ratio of blue M&Ms to green M&Ms?

Answers

Answer:

The answer is 6/25 :8/25

Which of the following statements must be true about the diagram

Answers

Answer:

D )        x+y=w

Step-by-step explanation:

An exterior angle of a triangle is equal to the sum of the two opposite interior angles.

You spent m minutes studying on Monday On Tuesday you studied 15 more minutes than you did on Monday. Wednesday, you studied 30 more minutes than you did Tuesday you studied twice as long on Thursday as you did on Monday on Friday you studied 20 minutes less than you did on thursday

Answers

Answer: 7m - 40

Step-by-step explanation:

Monday = m

Tuesday = m + 15

Wednesday = m + 15 + 30 = m + 45

Thursday = 2 × m = 2m

Friday = 2m - 20

The expression will now be:

= m + m + 15 + m + 45 + 2m + 2m - 20

= 7m- 40

Fay has a lemonade stand.
She spends £42 on ingredients.
She sells each glass of lemonade for £1.20.
If she sells 50 glasses of lemonade, what is her total profit?

Answers

her total profit is 3
Step-by-step explanation:
1.50 x 30 = 45
to find total profit - 45-42= 3

Answer:

she made a profit of 18$

50*1.2=60-42=18

Step-by-step explanation:

usando las propiedades de la igualdad resuelve: 13r=117 y explica el procedimiento​

Answers

Answer:

r=9

Step-by-step explanation:

13r=117

r=117/13

r=9

help help help plz plz plz

Answers

Answer:

x = 7

All 8 angles measure 135°

Step-by-step explanation:

(n-2)·180 = (8-2)·180 = 1,080°; this is the total of all interior angles

each angle is equal so we can divide 1080 by 8 and find that each angle measures 135°

to solve for 'x':

16x + 23 = 135

16x = 112

x = 112/16

x = 7

check:  16(7) + 23 = 135

             112 + 23 = 135

             135 = 135

please help and explain

is the square root of 16/9 rational or irrational
is 0.30300 rational or irrational?

Answers

Answer:

√169

Step-by-step explanation:

its is a rational, thats all I can help with

what is the result of -4+5/3?​

Answers

Answer:

-2⅓

Step-by-step explanation:

-4 + 5/3 Start out with this sum.

-4 + 1 ⅔ Make 5/3 into a mixed number.

-2 ⅓ Then add them together. The best way to do this is to first add -4 and 1 which makes -3. Then add ⅔ to -3 which is -2 ⅓

Which of the following best describes the equation below?

y = -3x - 13
A.
both linear and nonlinear
B.
nonlinear
C.
neither linear nor nonlinear
D.
linear

Answers

Answer:

d. linear

Step-by-step explanation:

using the format y=mx+b


find JQ if Q is the incenter of JLN

Answers

Answer:

Find each measure. 9. NP. ANSWER: 14. 10. PS.

Step-by-step explanation:

The length of JQ is 18.79 unit.

What is Pythagoras theorem?

According to the Pythagoras theorem, a triangle's hypotenuse square equals the sum of its other two sides' squares.

Given:

Q is the incenter of JLN

QP= QK= QM= 9 units

Now, In Δ JPQ

JP= 16.5, QP =9 , QP⊥ JP

So, JQ = √JP² + QP²

JQ= √16.5²+ 9 ²

JQ= 18.79 units

Hence, the length of JQ is 18.79 unit.

Learn more about Pythagoras Theorem here:

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how many degrees is a 12-gon

Answers

Answer:

150 degrees

Step-by-step explanation:

The degrees of a n-sided polygon is given by the expression:

180  (  n  −  2 )

where  n  is the number of sides. As we know that it ahs 12 sides, so

=180  (  12  −  2 )

=180  (  10 )

=1800 i.e. Therefore, there are  1800  degrees in a  12

-gon.

To find the measure of the angles, we know that the sum of all the angles is 1800 degrees, and there are 12 angles. So,

1800/12 = 150

So, the measure of the interior angle of a 12-gon is 150 degrees.

Please help with this!?!?!?

Answers

Answer:

2$

Step-by-step explanation:

you can see that for every mile, the cost goes up 1.5 dollars, and if you tale the lowest amount, 2 miles, multiply by 1.5 = 3, and then subtract that from 5, you get 2

2$ I hope this helps

0510006 please answer this
what is 8*29

Answers

Answer:

8*29=232

Step-by-step explanation:

if you take 8*20 you get 160

if you take 8*9 you get 72

Add them and you get 232

The midpoint of AB is M(-3,-3). If the coordinates of A are (-5, -1), what are
the coordinates of B?

Answers

Answer:

The coordinates of B are (-1, -5).

Step-by-step explanation:

Since the x-coodinate of M is 2 greater than that of B (note that -3 = -5 + 2), the x-coordinate of B is found by adding 2 to -3, obtaining -1.  The y-coordinate of M is -3, which is 2 less than the y-coordinate of A;  Thus, the y-coordinate of B is 2 less than -3, that is, -5.

The coordinates of B are (-1, -5).

Can someone please help me on this question? Question: What percent of a dollar is a quarter, a nickel, a dime, and two pennies?

Answers

Answer:

Its 42 percent

Step-by-step explanation:

0.25+0.5+0.10+0.2=0.42 or 42%

All the change added together is 42/100 because a dollar is just 100 cents.


Help me pleaseeee I don’t know what to do!!

Answers

Answer:

the answer is the M

Step-by-step explanation:

angle A and M both have 2 arcs which means they are congruent(equal)

There are sixteen girls and twelve boys in block 7 math. At that rate, how many
girls would you expect in a group with two hundred ten boys?

Answers

Answer:280

Step-by-step explanation:

If the main group is a ratio of girls to boys 16:12 and the 12 is increased to 210 then do 210/12=17.5 and multiply the 17.5 by 16 to get 280

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