What does interior angle a of the polygon in the figure equal? a. 110 b. 150 c. 230 d. 100

STEP-BY-STEP SOLUTION:

First of all, let's establish the angle sum of the shape as displayed below;

Angle sum of a polygon = 180° × no. of triangles in polygon = 180° × 4 = 720°

Now, let's simply subtract the values of all the other angles from the angle sum in order to find the value of angle ( A ) as displayed below:

A + 120 + 110 + 230 + 50 + 100 = 720

A = 720 - 120 - 110 - 230 - 50 - 100

A = 110°

Therefore, the answer is:

Option A - 110°

step - by - step explanation : The following are the tips on how to recognize a perfect square trinomial: ... If the first and last terms are perfect squares, and the middle term's coefficient is twice the product of the square roots of the first and last terms, then the expression is a perfect square trinomial.