Question

Triangle abc is an isosceles triangle in which angle b = angle c and l and m are points on ab and ac respectively such that lm parallel to bc. If angle a = 50 degree find angle lmc

Answer 1

Answer:

Step-by-step explanation:

Bac +abc+acb=180°

50+x+x=180°

2x=180-50

x=130/2

x=65°

Angle C =65°

LM||BC

therefore

Lmc+bcm=180°(adjacent supplementary angles)

LMC+65=180°

LMC=115°