Question

in angle Abc if side AB= side BC and measures of angles A=40 find the measure of angle B.​

Answer 1

Answer:

angle B=70

Step-by-step explanation:

1. ANGLE B = ANGLE C ( given side ab = side bc so angle b = angle c )
2. let take angle b and angle c as X
3. sum of three interior angle of triangle = 180°
4. so, 40+X+X=180°
5. 40+2X=180°
6. 2X=180°-40
7. 2X=140°
8. X=140°/2
9. X=70°

• HENCE PROVED:-)