Question

EXERCISE 11.1
find its fourth angle.
1. If three angles of a quadrilateral are 80° 70° and 50°, find its fourth angle
​

Answer 1

Answer:

sum of angles in a quadrilateral =360 degrees

let the 4th angle be x

80+70+50+x=360

x=160

therefore the fourth angle is 160 degrees

Answer 2

Answer:

160

Step-by-step explanation:

because the sum of angles of angles is 360

so , 80 + 70 + 50 = 200

so , 360 - 200 = 160