Question

In a pentagon, three interior angles are right angles and the remaining interior angles are congruent. Find the measure of each interior angle.​

Answer 1

Answer:

135,135

Step-by-step explanation:

sum of all angles in pentagon = 540°

right angle = 90°

let 1st unknown interior angle be x

other = x

x+x+90°+90°+90° = 540°

2x+270° = 540°

2x = 540°-270°

2x = 270°

x = 270°/2

x = 135°

therefore unknown two angles are 135° and 135°

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