Question

Need help on this please help

Answer 1

The measure of ∠A is 127°.

Explanation:

The interior angles of a triangle always add up to 180°. Since you can fix three triangles into a pentagon, the sum of its interior of angles is 540° You could also look at how many angles there are (5), multiply that number by 180°, then subtract 360° from the product.

540° - (113° + 80° + 130° + 90°) = ∠A

540° - 413° = 127°

∠A = 127°

Hope this helps,

~ Nicki ~

Answer 2

127

Explanation:

The sum of interior angles in this rectangle is = 540

three angles are given and one of the angle is a right angle so it's 90 degrees

80 + 130 + 90 + <A + 113 = 540 add like terms

413 + <A = 540 subtract 413 from both sides

<A = 127