1. Section 20.1: Exploring What Makes Triangles Congruent

2. Objective:
By following instructions, students will be able to:
Show that two triangles are congruent.

3. Two triangles are congruent if and only if
corresponding parts sides are congruent.
corresponding pairs of angles are congruent.

4. Determine whether the given triangles are congruent. Explain.
explain 1A

5. Determine whether the given triangles are congruent. Explain.
explain 1B

6. Determine whether the given triangles are congruent
Determine whether the given triangles are congruent. Explain you reasoning.
Your-Turn #1
a) b)

7. Find the value of the variable that results in congruent triangles.
explain 2A

8. Find the value of the variable that results in congruent triangles.
explain 2B

9. Find the value of the variable that results in congruent triangles.
Your-Turn #2
a) b)

10. Revisit Objective:
Did we…
Show that two triangles are congruent?

11. HW:
Sec 20.1 pg 802 #s 1-10