Math Is Fun Forum
Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °
You are not logged in.
- Topics: Active | Unanswered
Pages: 1
#1 2008-07-15 22:20:44
- tony123
- Member
- Registered: 2007-08-03
- Posts: 229
cyclic quadrilateral
In a cyclic quadrilateral ABCD, prove that
Last edited by tony123 (2008-07-15 22:21:43)
Offline
#2 2008-07-16 03:13:06
- JaneFairfax
- Member
- Registered: 2007-02-23
- Posts: 6,868
Re: cyclic quadrilateral
In a cyclic quadrilateral, opposite angles are supplementary. Say, C is opposite to A and D is opposite to B. Then
andand
andOffline
#3 2008-07-16 23:46:01
- Identity
- Member
- Registered: 2007-04-18
- Posts: 934
Re: cyclic quadrilateral
So both sides equal 0 ! Wow
Offline
Pages: 1