Answer:
150°
Step-by-step explanation:
The sum of the angles in a quadrilateral = 360°
Divide by the sum of the parts of the ratios to find the value of one part of the ratio.
sum of parts , 3 + 2 + 2 + 5 = 12 parts
360° ÷ 12 = 30° ← value of 1 part of the ratio , then
3 parts = 3 × 30° = 90°
2 parts = 2 × 30° = 60°
5 parts = 5 × 30° = 150°
The largest angle in the quadrilateral is 150°
