EXAMPLE:
b
+ 73⁰ + 73⁰ = 180⁰ (angles in a triangle add up to 180)
b
= 34⁰
EXAMPLE:
q = p = 49⁰ (isosceles triangle)
r
+ 49⁰ + 49⁰ = 180⁰ (angles in a triangle add up to 180⁰)
r
= 82⁰
Angle proof.
Prove that triangle ABC is isosceles.
Give all your
reasons clearly.
Test lesson 10
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