1. Lesson 3.3 Classifying Triangles & Triangle Angle-Sum Theorem Do Now: Find the measure of angle 1. 62 and x+12 are complementary. 62+x+12 = 90 degrees. 74+x= 90 -74 -74 x = 16º

2. The __________________ of the measures of the angles of a triangle is _____________________________.

3. The ______sum____________ of the measures of the angles of a triangle is _____180 degrees___.

4. Angle A + Angle B + Angle C = _______. Angle A + Angle B + Angle C = 180 0.

5. The sum of angles A, B, and C is 180. 85 + 43 + C = 180 128 + C = 180 -128 C = 52

6. 3 congruent sides at least 2 congruent sides no congruent sides

7. -Three equal angles - Three acute angles

8. - One Right Angle - One Obtuse Angle