Question

answer in full detail ​

Answer 1

Answer:

let ABC be a triangle

GIVEN

ANGLE A = ANGLE B + ANGLE C ---> 1

therefore angle A + angle B + angle C = 180 degrees-->

from 1and 2 angle A + angle A= 180 degrees

==> 2 A =180 degrees

A= 180/2

==> A= 90 degrees

therefore TRIANGLE ABC IS A RIGHT ANGLE TRIANGLE

HOPE THE ANSWER IS HELPFUL