4.5Congruent Figures and Corresponding Parts
Quick Answer
Two figures are congruent if all corresponding sides and angles are congruent. The order of vertices in a congruence statement (△ABC ≅ △DEF) tells you which parts correspond: A↔D, B↔E, C↔F.
Essential Question
What does it mean for two figures to be congruent, and how does the order of vertices in a congruence statement communicate which parts correspond?
Learning Goals
- 1Define congruent figures.
- 2Identify corresponding sides and angles from a congruence statement.
- 3Write a congruence statement in correct vertex order.
- 4Use congruence marks to identify corresponding parts in a diagram.
Key Vocabulary
Congruent figures
Figures in which all corresponding sides and angles are congruent.
Corresponding parts
Matching sides and angles of congruent figures.
Congruence statement
A statement such as △ABC ≅ △DEF that identifies corresponding vertices in order.
Full lesson content coming soon
Worked examples, guided practice problems, a workbook, quiz, and downloadable PDF resources will be added to this lesson in Phase 2. The learning goals and vocabulary above reflect the complete lesson scope.