Thread: Parallelogram Proof...
View Single Post
  #2  
Old November 29th, 2008, 02:04 AM
badgerigar badgerigar is offline
Senior Member
  
Join Date: Dec 2007
Location: Melbourne
Posts: 420
Country:
Thanks: 54
Thanked 143 Times in 134 Posts
badgerigar has a spectacular aura aboutbadgerigar has a spectacular aura about
Default
let angle ADK = CDK = x. Use the fact that co-interior angles in parallel lines add to 180 to get DCK and then the angle sum of a triangle to get DKC and you are done.
Reply With Quote