1. Warmup – grab a book Room 195236, submit answers for x and y

2. 3.3 Parallel Lines and The Triangle Angle Sum Theorem 10/24 with Quiz on 10/25

3. Learning Targets I can find missing angles of a triangle using the Triangle Angle Sum Theorem I can classify triangles by their sides and angles I can use exterior angles of triangles to find missing interior angles

4. Classifying Triangles by angles Equiangular: all angles congruent Acute: all angles acute Right: one right angle Obtuse: one obtuse angle

5. Classifying Triangles by Sides Equilateral: all sides congruent Isosceles: two sides congruent Scalene: no sides congruent

7. On page 134, in your groups, do #1-3

8. On p. 135, try #6-8

9. Triangle Exterior Angle Theorem: The measure of each exterior angle of a triangle equals the sum of the measure of its two remote interior angles

10. Practice

11. In your book,p136 #26-28

12. P.136 #31-34

13. Homework 3-3 in your packet