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prove that sum of angles of a triangle is 180 degree​

Answer 1

Answer:

Step-by-step explanation:

Practical prove---

1st prove--- So, take a paper, then draw a triangle on the paper after this cut it by scissor. After that fold all the sides of the triangle attaching to the borders of a triangle  Do this process till you fold all, What do you observe ? let me tell the angle of base become 180 degree angle so now you can say that the sum of all angles of triangle is 180 degree...

2nd prove---  Now, make a lots and lots of triangle as you can, then start adding up their angles, What do you observe?

Let me answer you will observe that sum of angles of all triangle is 180 degree, It can be 1 less or more maybe of wrong point of view. So now You can say that the sum of the triangle is 180 degree...

Written prove---

                                    Draw a line  maybe WS parallel to the side XY of the given triangle. hence, the sum of the interior angles of a triangle will come 180°.

Answer 2

Step-by-step explanation:

here's the answer

hope it helps you