Question

full explanation
plz do
1,2​

Answer 1

Answer:

To prove: Angle A + Angle B + Angle C = 180°

Step-by-step explanation:

1)-

Let draw right - angled triangle ABC,

Angle B= 90°,

Angle C= 45°,

Angle A= 45°.

Let us add each angle

A + B + C

= 45° + 90° + 45°

= 180°

Proved.

2)-

Let the Quadrilateral be a square.

Therefore, each of it's angle will be of 90° (property of square )

If we add each angle of square,

4×angle

= 4×90°

= 360°

Therefore, the sum of interior angles of any quadrilateral is 360°.

Hope you will understand it well.

And don't fear to ask question because if you ask any question, more and more you will get

NO means Next Opportunity.

Study well.