Question

Show that sum of all angles of a quadrilateral is 360°​

Answer 1

Step-by-step explanation:

We know that the sum of the angles of a triangle is 180°. ⇒ ∠A + ∠B + ∠C + ∠D = 360° [using (i) and (ii)]. Hence, the sum of all the four angles of a quadrilateral is 360°.

Answer 2

to prove sum of all angles of a quadrilateral is 360.

Step-by-step explanation:

sum of all angles of n-sided polygon = 180(n-2)

where n is number of side

quadrilateral has 4sides

sum of all angles =180

180(4-2)=180*2

360..