4.2 Excercises- Angle Theorems
1.
Outer Angles
How big it the angle
x
?
Λ
x =
2. Supplementary Angles
How big are the triangle’s angles?
a)
Λ
c =
b)
Λ
a =
c)
Λ
b =
3. Top Triangles
In the triangle ABC, the segment DE is parallel to the segment BC. How big are the angles C and D?
a)
ΛC =
b)
ΛD =