✳ I can use and describe rigid motions to decide if two figures are congruent (MGSE9-12.G.CO.6)
✳ I can use the definition of congruence to show that two triangles are congruent if and only if corresponding pairs of sides and corresponding pairs of angles are congruent. (MGSE9-12.G.CO.7)
✳ I can explain how the criteria for triangle congruence (SSS, SAS, ASA, AAS, and HL) follow from the definition of congruence in terms of rigid motions. (MGSE9-12.G.CO.8)
Question 1
1.
Two figures are congruent if and only if one can be obtained from the other by a sequence of ___________ ______________.
1
Question 2
2.
1
1
Question 5
5.
Select all transformations that are RIGID MOTIONS.
Question 6
6.
Are the triangles congruent?
Put the RIGID MOTIONS argument in the correct order.
A reflection is a rigid motion.
Therefore, △ABC ≅ △RGD.
A reflection will map â–³ABC onto â–³RGD.
Triangle Congruence Theorems
Determine if the two triangles are congruent. If they are, state how you know.
