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WINSTONCH [101]
3 years ago
5

Please help, I’ll give brainlyist FIND THE MEASURE OF A

Mathematics
1 answer:
Ksenya-84 [330]3 years ago
6 0

Answer:

18°

Step-by-step explanation:

The m∠A ≅ x+32

The angle opposite 36° is 36° & the angle opposite x+126 is x + 126: Vertical angles theorem

The three angles in the triangle with m∠A are 36°, x+126°, and x+32°(m∠A)

36+x+126+x+32 = 180 : Angles in a triangle theorem

194+2x = 180

2x = -14

x= -7

m∠A ≅ -14+32

m∠A≅ 18°

I hope this helps!!!

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Which congruency theorem can be used to prove<br> that ABD =DCA?
Dimas [21]

Answer:

The answer is "SAS".

Step-by-step explanation:

In this question we assume two angle is given that are:

\ Two \ triangles \angle ABD \ and \angleDCA \\\\\ In \ this \ on \ angle \ is \ common \ that \ is, \\\\  AD=AD \\\\AB= CD \\\\\angle A \ is \ equal \ =  \angle A \ (\ which \ is \ given)\\\\

That's why SAS rule is correct.

6 0
3 years ago
PLEASE HELP !! ILL GIVE BRAINLIEST !!
xxMikexx [17]

Answer:

JIG and JIL

Step-by-step explanation:

Adjacent angles share a side

I hope this helps :)

8 0
2 years ago
Read 2 more answers
It took John 12 hours riding his bike to make the round trip to his uncle's. If he averaged 20 mph out and 30 mph back, how long
notsponge [240]

Answer:

Step-by-step explanation:

Let the time taken by the john to get to his uncle be x.

Let the time taken by the john to get back from his uncle be y.

So,

x+y=12 ------ equation 1

According to the given velocities:

20x=30y

x=3/2y

Put the value x=3/2y in equation 1

3/2y+y =12

3y+2y/2=12

3y+2y=12*2

5y=24

y=24/5

y=4.8h

Now put the value of y in x=3/2y

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6 0
3 years ago
The definition of a circle uses the undefined term _______.
Alecsey [184]

Answer:

C. Plane  

Step-by-step explanation:

One definition of a circle is: "It is the set of all points in a plane that are at a given distance from a fixed point."

The undefined term is the word "plane."

You could define a plane as a flat surface with zero thickness and extends infinitely in all directions, but it isn't in the definition of a circle.

Euclid defined a plane as "a surface that lies evenly with the lines on it" before he defined a circle, so the meaning was understood.

A, B, and D are wrong. They aren't mentioned in the definition.

6 0
3 years ago
Please help @musiclover10045<br> I have been stuck on this problem like forever
Stella [2.4K]

a) ABD and CBD are Supplementary angles and need to equal 180 degrees

Subtract 117 from 180 for CBD:

CBD = 180 - 117 = 63 degrees


b) In triangles the the shortest side would be opposite the shortest angle.

Since angle D is 56 degrees ( the smallest inside angle) then side BC would be the shortest side.


c) The side opposite the largest angle would be the longest.

Angle B is 63 degrees ( the largest) so side CD is the longest.


3 0
3 years ago
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