3 Construct 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.
4 Does this conjecture apply to an equilateral triangle? All isosceles conjectures apply to equilateral triangles
5 Converse 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
6 Example Pg 206 #1-7, 10, 11 Find the following: A 7cm E 960 420 3 cm C BDFind the following: