TRiangle proofs vertical angles 2016.notebook
October 20, 2016
Gold medals aren't really made of gold. They're made of sweat,
determination,
and a hard‐to‐find alloy called guts.Gold medals
Dan Gable
Objective: How do we use vertical angles in a proof?
1
TRiangle proofs vertical angles 2016.notebook
W
F
D
E
October 20, 2016
Given: WL and EF intersect at D. <W = < L, D is the midpoint of WL.
Prove: Triangle WED = Triangle LFD L
2
TRiangle proofs vertical angles 2016.notebook
I
V
October 20, 2016
Given: VO and IT bisect each other at C. Prove: Triangle VCI = Triangle OCT C
T
O
3
TRiangle proofs vertical angles 2016.notebook
October 20, 2016
4