✳ 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.
Which of the learning targets/standards are you LEAST confident with?
Rigid Motion Review
Question 2
2.
Two figures are congruent if and only if one can be obtained from the other by a sequence of ___________ ______________.
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Question 6
6.
Select all transformations that are RIGID MOTIONS.
Question 7
7.
Are the triangles congruent?
Put the RIGID MOTIONS argument in the correct order.
A reflection will map â–³ABC onto â–³RGD.
A reflection is a rigid motion.
Therefore, △ABC ≅ △RGD.
Triangle Congruence Theorems
Determine if the two triangles are congruent. If they are, state how you know.
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Determine what ADDITIONAL information would be needed to show that the two triangles are congruent.
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Question 18
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Question 19
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Question 20
20.
In trianlge ΔAGE and ΔOLD, ∠A ≅ ∠O, and AE ≅ OD. What ADDITIONAL information is needed to prove that the triangles are congruent by AAS?
