Triangle Congruence Proofs - Extra Practice.pdf - Geometry ... - Free Printable

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1. Triangles: ΔABC and ΔDEF
- Different: The triangles are not the same size or shape.
- Reasons: The side lengths and angles do not match; they are not congruent.

2. Triangles: ΔABC and ΔDEF
- Different: The triangles are mirror images (reflections) of each other.
- Reasons: They have the same side lengths and angles but are oriented differently; they are congruent by reflection.

3. Triangles: ΔABC and ΔDEF
- Different: One triangle is a scaled version of the other.
- Reasons: The corresponding angles are equal, but the side lengths are proportional, not equal; they are similar but not congruent.

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