Question

5) The sum of four angles of quadrilateral is always​

Answer 1

Answer:

The answer is 360°.

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Answer 2

Answer:

360

Step-by-step explanation:

Proof.

All polygon have 360 as sum of there exterior angle .

Quadrilateral has four angles.

SO,

360÷4=90

so each exterior angle is 90.

Formula for interior angle is

180-exterior angle=180-90=90

means each angle is 90

and 90×4=360

BECAUSE QUADRILATERAL HAS FOUR SIDES.