Question

A campground sites is in shape of a convex quadrilateral . the sides of campground from 2 right angles .the third angle measure 20 degree less than the forth angle. find measure of all interior angles

Answer 1

measure of fourth angle be x
measure of third angle is x -20
measure of first two angles is 90 each

x+x-20+90+90 = 360
2x+160 =360
2x = 200
x = 100
x-20 = 80
measure of anles are 90, 90, 100, 80

Answer 2

Answer:

Measure of fourth angle be=x

Measure of third angle is x-20

Measure of first two angles is 90° each.

x+x-20+90°+90°=360°

2x-20+180°

2x+160°=360°

x=100°

100°-20 =80

Measure of all angles are 90° 90°100°&80°