1. Find the value of the variable and the measure of each angle.
Problem of the Day

2. Section 4-8 Triangles and Coordinate Proof

3. Then Now Objectives You proved triangles congruent.
Position and label triangles for use in coordinate proofs.

4. Common Core State Standards
Content Standards
G.CO.10 – Prove theorems about triangles.
G.GPE.4 – Use coordinates to prove simple geometric theorems algebraically.
Mathematical Practices
2) Reason abstractly and quantitatively.
3) Construct viable arguments and critique the reasoning of others.
Common Core State Standards

5. Name the missing coordinates of the triangle.
Example 2

6. Name the missing coordinates of the triangle.
Example 2

7. Name the missing coordinates of the triangle.
Example 2

8. Name the missing coordinates of each triangle.
Example 2

9. p.306 #3, 13 – 18, 40
Homework

10. Name the missing coordinates of the triangle.
Problem of the Day