How Do You Find The Angle Of An Isosceles Triangle https://www.youtube.com/watch?v=V2iK77V-Q_gTheorem: Angles opposite to equal sides of an isosceles triangle are equal.Given: In ∆ABC, AB = AC To Prove: ∠B = ∠C Construction: Draw AD, bisector of ∠A ∴ ∠1 = ∠2 Proof: In ∆ADB & ∆ADC AD = AD (Common) ∠1 = ∠2 (by construction) AB = AC By SAS, ∆ADB … [Read more...] about How Do You Find The Angle Of An Isosceles Triangle