Directions: Grab a paper and pencil to make your computations. 1. ΔABC is isosceles where AC = CB. Find AC. 2. ΔBUG is isosceles. Find m∠U. 3. The vertex angle of an isosceles triangle measures 20 degrees more than twice the

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Symmetry in an isosceles triangle. The altitude of an isosceles triangle is also a line of symmetry. Leg AB reflects across altitude AD to leg AC. Similarly, leg AC reflects to leg AB. Base BC reflects onto itself when reflecting across the

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