Question

Find a
in the following figure (Provided AB=AC)
A
2x+7
45​

Answer 1

Explanation:

Since it is an Isosceles triangle base angles are equal so

2x+7=45

2x=45-7

2x=38

x= 38/2

x=19

To find measure of A

By angle sum property

45°+45°+A=180°

90°+A =180°

A=180°-90°

A = 90°

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