Question

theorm sum of all angle is equal to 360 degree ​

Answer 1

HOPE IT'S HELPFUL.....

Answer 2

Let we draw a quadrilateral is 360 and AC be a diagonal.

We know that,

Angle DAC + angle ACD + Angle D =180

similarly in triangle ABC ,

Angle CAB + Angle ACB + angle B =180.

adding eq 1 and 2.

Angle DAC + angle ACD + Angle D + angle CAB + angle ACB + angle B =180+180.

angle A + angle D + angle B + angle C = 360.

The theorem is proved.

sum of all angle is 360.