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4.2 Angle Measures of Triangles

4.2 Angle Measures of Triangles. textbook page 179. Triangle Sum Theorem. the sum of the angles of a triangle always = 180 o. Corollary to Triangle Sum Theorem. the acute angles of a right triangle are complementary. Exterior Angle theorem.

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4.2 Angle Measures of Triangles

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  1. 4.2 Angle Measures of Triangles textbook page 179

  2. Triangle Sum Theorem • the sum of the angles of a triangle always = 180o

  3. Corollary to Triangle Sum Theorem • the acute angles of a right triangle are complementary

  4. Exterior Angle theorem • the exterior angle of a triangle = the sum of the 2 nonadjacent interior angles

  5. Homework • Assignment # 2 • textbook page 182 • problems 1-14 all, 27-29 all • we will do 1-5 together in class

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