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Honors Geometry Name:________________________ 4.4 Class Notes Date:______________Pd:_________ WARM UP: 1. In an isosceles triangle, if a segment is drawn from the vertex of the angle between the congruent sides to the midpoint of the opposite side, then congruent triangles are formed. RS plane Y TRS VRS Prove: RTV is isosceles 2. Given: Isosceles Triangle Theorem: __________________________________________ Vertex Angle __________________________________________________________________ Given: leg leg base angles base Prove: Corollaries from Isosceles Triangle Theorem : Corollary 1: An equilateral triangle is also ________________________. Corollary 2: An equilateral triangle has three ___________degree angles. Corollary 3: The bisector of the vertex angle of an isosceles triangle is _____________________________________________________. Converse of Isosceles Triangle Theorem:________________________________ __________________________________________________________________ Corollary 4: An equiangular triangle is also ____________________________ Homework: p.137-139 #1-7 odd, 13-29 odd