Answer:
option 1.
m1 = 80° , m2 = 35° , m3 = 33°
Step-by-step explanation:
we have 5 triangles
with the rule that the internal angles of a triangle add up to 180 ° we can calculate the missing angles
first triangle:
45° + 31° + x = 180°
x = 180 - 45 -31
x = 104
m2 + 69 = 104
m2 = 104 - 69
m2 = 35°
second triangle:
69° + 31° + m1 = 180°
m1 = 180 - 31 - 69
m1 = 80
third triangle:
47 + 69 + y = 180
y = 180 - 69 - 47
y = 64
m3 + 31 = 64
m3 = 64 - 31
m3 = 33
