Question

in a triangle ABCD Angle B is equals to 105 degree angle C is equal to 50 degree find angle A

Answer 1

the sum of angles in a triangle => 180
therefore angles A,B,C=> 180
=> angleA=180-(105+50)
=>180-155=>25 degrees

Answer 2

by angle sum property
angleA+angleB+angle C = 180
angleA= 180-(105+50)
=180-155
=25 degree