Answer:
m1 = 90°
m2 = 68°
m3 = 112°
m4 = 112°
m5 = 68°
m6 = 44°
m7 = 112°
m8 = 112°
Concept used:
- The sum of the internal angles of a triangle is 180
- With two parallel line and one oblique, the angles internal and opposite are congruent (ex: m3 and m4)
- An isosceles triangle has the base angles congruent
Step-by-step explanation:
m1 is a rectangle angle
m2 is 180-m1-22
m3 is 180-m2
m5 is 180-m4
m6 is 180-m5-m5
m3 = m4 = m7 = m8
