Question

(Using algebra) find the measure of angle A

Answer 1

`x + 50 + 50 = 180 \\ x + 100 = 180 \\ x + 100 - 100 = 180 - 100 \\ x = 80`

x is 80

Explanation:

That is an isosceles triangle where two sides are equal and two angles equal

Answer 2

80

Explanation:

the two hash marks tells us that the side lengths are the same, that means the sides opposite of those angles have the same measurement.

<B = 50

<C = 50

That means that angle x must be 80. The sum of the interior angles of a triangle is 180

180 - 50 - 50 = 80