Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ -¹ ² ³ °
You are not logged in.
#1 2010-06-25 15:02:35
- lakeheadca
- Member
Offline
Problem#2 Grade 11 Geometry
in the diagram of triangle ABC and EDC below, AE and BD intersect at C, and angle
CAB approx= CED
which method can be used to show that triangle ABC must be similar to Triangle EDC.
1. SAS
2.SSS
3.AA
4.HL
please explain? thanks
#2 2010-06-25 15:15:42
- ZHero
- Real Member
Offline
Re: Problem#2 Grade 11 Geometry
∠ACB=∠ECD
∠CAB=∠CED
Hence, the third angles must also be equal...
∠ABC=∠EDC
∴ AAA or (AA)
If two or more thoughts intersect with each other, then there has to be a point.