A powerpoint for students to store the results of the their investigations using the gizmo "Proving Triangles Congruent" at www.explorelearning.com.

1. Congruent triangles

2. Use the gizmo to investigate:
• For each slide, indicate whether or not two
triangles are definitely congruent, or not
necessarily congruent, under the given
conditions, by highlighting either “definitely”
or “not necessarily” on the slide
• If you choose “definitely”, paste several
snapshots from the gizmo to support that
• If you choose “not necessarily”, paste one
snapshot from the gizmo to support that

3. When two triangles have exactly one angle in
common, they are (definitely, not necessarily)
congruent

4. When two triangles have exactly two angles in
common, they are (definitely, not necessarily)
congruent

5. When two triangles have exactly three angles in
common, they are (definitely, not necessarily)
congruent

6. When two triangles have exactly one side in
common, they are (definitely, not necessarily)
congruent

7. When two triangles have exactly two sides in
common, they are (definitely, not necessarily)
congruent

8. When two triangles have three sides in common, they
are (definitely, not necessarily) congruent

9. When two triangles have exactly one side and one
angle in common, and the angle is adjacent to the
side, they are (definitely, not necessarily) congruent

10. When two triangles have exactly two sides and one
angle in common, and the angle is not between the
sides, they are (definitely, not necessarily) congruent

11. When two triangles have exactly two sides and one
angle in common, and the angle is between the
sides, they are (definitely, not necessarily) congruent

12. When two triangles have exactly two angles and one
side in common, and the side is not between the
angles, they are (definitely, not necessarily) congruent

13. When two triangles have exactly two angles and one
side in common, and the side is between the
angles, they are (definitely, not necessarily) congruent