PLEASE ANSWER QUICKLY (I will give first answer Brainliest)

Mathematics

1 answer:

Zina [86]3 years ago

3 0

Answer:

The measure of Angle A is 45.5 degrees

Step-by-step explanation:

In order to find the measure of the angle A, add it to the measures of angle B and C. Since it is an isosceles triangle, we know that B and C have the same measure. Then we set this equal to 180.

A + B + C = 180

2x + 4 + 3x + 5 + 3x + 5 = 180

8x + 14 = 180

8x = 166

x = 20.75

Now we can find the measure of Angle A by putting the value of x in for x.

2x + 4 = A

2(20.75) + 4 = A

41.5 + 4 = A

45.5 = A

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2x° + 14°<br> 60°<br> X=<br> degrees.

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2x+14=60(vertical)
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x=23

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