Question

prove that practally measure of angle of triangle in 180 proof with diagram​

Answer 1

Answer:

Hope this answer helps

Answer 2

given - ABC is a triangle

To prove - angle 1 + angle 2 + angle 3 = 180°

construction - draw PQ parallel to BC

proof - angle 4 + angle 1 + angle 5 = 180° ( angles on straight line)

but angle 4 = angle 2 ( alternate interior angle)

and angle 5 = angle 3 ( alternate interior angle)

so angle 2 + angle 1 + angle 3 = 180°

Hence proved