3
Use the sum of interior angles formula
A pentagon has 5 sides, so:
Sum of interior angles = (5 - 2) × 180 = 3 × 180 = 540°
Add the known angles
Two right angles = 2 × 90 = 180°
One angle = 150°
One angle = 160°
Total of known angles = 180 + 150 + 160 = 490°
Subtract from total
Fifth angle = 540 - 490 = 50°
Answer: 50 degrees
Added 315 days ago|7/30/2025 1:12:08 PM
This answer has been confirmed as correct and helpful.
