35.	+Isosceles+Triangle+-++Label+vertex+angle,+base+angles,+legs+and+base,+Base+Angle+Theorem+and+Converse+Base+Angle+Theorem

=Isosceles Triangles: = Base angle and Converse Base angle theorem

- vertex angle - The angle formed by the two equal legs - base angles - The angle that is formed by the base and one leg in isosceles triangle; The base angles are always equal - legs and base - An isosceles triangle has two congruent sides called legs and a third side called the base.

Summary: An Isosceles triangle is a triangle that has at least 2 congruent sides. According to the base angle theorem, if the triangle is isosceles, then you can say that the 2 base angles are also congruent. Here, you can find the definitions and examples to anything related to Isosceles Triangles such has vertex angles base angle and converse base angle theorem and more.

Base Angle Theorem: If 2 sides of a triangle are congruent, then the angles opposite them are congruent.

Converse Base Angle Theorem: if 2 angles of a triangle are congruent, then the sides opposite them are congruent

Example Problems:



Helpful websites: http://www.icoachmath.com/Sitemap/BaseAngleTheorem.html http://www.mathwarehouse.com/geometry/congruent_triangles/isosceles-triangle-theorems-proofs.php (This website also includes Proof) http://www.freemathhelp.com/feliz-isosceles.html http://library.thinkquest.org/20991/geo/ http://mathworld.wolfram.com/ 