4-5 Isosceles & Equilateral Triangles Type your name here 4-5 Isosceles & Equilateral Triangles Label this in here Label this in here Label these here Label this here Isosceles Triangle Theorem (I.T.T.) Type it here Converse of the I.T.T.: if angles of a triangle are congruent, then ... C Theorem If BD is the < bisector of this isosceles triangle, what else is true about BD ? B D A A corollary is [in your own words].. Type them here and here

Verify the proof, then print this form w/ name on it Read the proof for the Isosceles Triangle Theorem on pg 229 to attempt to prove (and sort) the ITT Converse. C GIVEN: <A <B PROVE: 1 2 B A D A.S.A. postulate <1 <2 Given BD DA, <1 and <2 are right angles All right <‘s are cong. Statements Reasons BDC ADC There is 1perp. bisector of a segment <A <B C.P.C.T.C. Let CD be the bisector of BA Def. of perp. bisector Verify the proof, then print this form w/ name on it You may begin packet pg 7