### Clarifications

*Clarification 1*: Instruction includes showing that the corresponding sides and the corresponding angles are congruent.

**Subject Area:**Mathematics (B.E.S.T.)

**Grade:**912

**Strand:**Geometric Reasoning

**Date Adopted or Revised:**08/20

**Status:**State Board Approved

## Related Courses

## Related Access Points

## Related Resources

## Formative Assessments

## MFAS Formative Assessments

Students are asked to use rigid motion to explain why the ASA pattern of congruence ensures triangle congruence.

Students are asked to use rigid motion to explain why the HL pattern of congruence ensures right triangle congruence.

Students are asked to use rigid motion to explain why the SAS pattern of congruence ensures triangle congruence.

Students are asked to use rigid motion to explain why the SSS pattern of congruence ensures triangle congruence.

In a diagram involving two parallel lines and a transversal, students are asked to use rigid motion to prove that alternate interior angles are congruent.

Students are asked to use the definition of congruence in terms of rigid motion to show that two triangles are congruent in the coordinate plane.

Students are asked to translate and rotate a triangle in the coordinate plane and explain why the pre-image and image are congruent.