Question

4. The four angles of a quadrilateral are as 3:5:7:9. Find the largest angle
among these.
a) 45°
b) 75°
c) 105°
d) 135°​

Answer 1

Answer:d) 135°

Step-by-step explanation:

3X + 5X + 7X + 9X = 360° ( sum of angles of a quadrilateral)

24X = 360

X = 360 ÷ 24

X = 15

Largest angle = 9X = 9 × 15 = 135°

Answer 2

Answer:

3x+5x+7x+9x=360•

24x=360

x=15