Question

A) 60°
B) 65°
C) 70°
D) 75°
E) 80°

Answer 1

Respuesta:

C) 70°

Explicación paso a paso:

∡AOM = ∡MOB

∡AOM = a

∡MOB = a

∡BOC = b

a + a + b + b = 140°

2a + 2b = 140

2 ( a+ b ) = 140

( a + b ) = 140/2

a + b = 70°

∡MOC = a + b = 70°