Question

To show that the sum of all angles of a quadrilateral is 360°.
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Answer 1

Answer:

Step-by-step explanation:

We know that the sum of the angles of a triangle is 180°. ...

Hence, the sum of all the four angles of a quadrilateral is 360°.

Answer 2

Hey mate...Here's your answer:

A quadrilateral is a closed figure with = 4 sides.

If we take a rectangle as a quadrilateral , we will get the angles of all sides as 90° .

One side = 90°

Four sides = 90°×4

= 360°

Hence; quadrilateral is of 360°

This statement is true for all kinds of quadrilaterals.

Hope this helps you in all ways....