Question

the measures of three angles of a quadrilateral are 60,70,80 respectively then find the measure of the fourth angle of the quadrilateral​

Answer 1

The measurement of all angles of a quadrilateral triangle is = 180+180 = 360

then the given angles = 60+70+80 = 210

x+ 210 = 360

x = 210-360 = 150

therefore the measure of the fourth angle of the quadrilateral is 150

Answer 2

Step-by-step explanation:

Measurement of quadrilateral is 360degree because the sum of two angles is 180

So,180+180=360