Question

prove that sum of internal angle of triangle is 180​

Answer 1

you can write according to angle sum property or by adding all the angles of triangle


MARK AS BRAINLIEST

Answer 2

$\huge\boxed{\texttt{\fcolorbox{purple}{yellow}{Heya !!!}}}$

YOUR PROOF IS:-

Construct line PQ parallel to BC.

Therefore,

angle 1 = angle 2 ..... ( alternate interior angles )

angle 3 = angle 4 ...... ( alternate interior angles )

As, angle 1 + angle 5 + angle 3 =180deg

hence ,

angle 5 + angle 2 + angle 4 = 180 degrees...

therefore angle A + Angle B + angle C = 180 degrees....

therefore the sum of internal angles of a triangle is always 180 degrees

hence proved...

THANKS

hit ❤

follow me

mark brainliest