3Construct an Isosceles Triangle Draw an angle, label it C Mark congruent segments along each side. Label A and BConnect A and BMeasure and label base angles.Is there a pattern?ABBase anglesIsosceles Triangle ConjectureIf a triangle is isosceles, then ________________________its base angles are congruent.
4Does this conjecture apply to an equilateral triangle? All isosceles conjectures apply to equilateral triangles
5Converse of the Isosceles Triangle Conjecture Is the converse true?Converse of the Isosceles Triangle ConjectureIf a triangle has two congruent angles, then ___________________________Cit is an isosceles triangle.Draw a segment and label ABDraw an acute angle at point ACopy at point B.Label point of intersection CMeasure AC and BCAB
6Example Pg 206 #1-7, 10, 11 Find the following: A 7cm E 960 420 3 cm C BDFind the following: