Question

If the three angle of a quadrilateral is 30 degree, 60 degree and 90 degree then find the fourth angle

Answer 1

Answer:

by angle sum property of a quadrilateral

:- sum of all angles = 360⁰

30 + 60 + 90 + x = 360⁰

x = 360⁰ - 180⁰

fourth angle is 180⁰

Answer 2

Sum of all angles of quadrilateral =360°

Measure of first angle= 30°

Measure of second angle= 60°

Measure of third angle= 90°

Sum of all angles = 30°+60°+90°=180°

Measure of fourth angle= 360°-180°=180°

Hence, fourth angle will be 180°