Congruent Triangles Proofs Activity

Grade Levels
9th - 11th, Homeschool
Subjects
Standards
Formats Included
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Pages
14 + answer keys
$3.00
$3.00
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  2. This is a complete congruent and similar triangles unit for Geometry. This is the 4th unit in my Geometry curriculum.*Note: This unit is best suited for on-level or lower-level/special education math classes. Supplements will most likely be needed for an honors or upper-level math class.*Update: Vid
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Description

This congruent triangles proofs activity includes 16 proofs with and without CPCTC.

The first 8 require students to find the correct reason. The second 8 require students to find statements and reasons. Topics include: SSS, SAS, ASA, AAS, HL, CPCTC, reflexive property, alternate interior angles, vertical angles, corresponding angles, midpoint, perpendicular, etc. Please see the picture above for a list of all topics covered.

For the activity, I laminate the proofs and reasons and put them in a baggie. Then students take the proof card and place the correct reasons in the correct order on the card. If you do not want to laminate, you can always have students glue or tape the reason on the proof card.

There is a digital version of this activity for Google Drive™ available by clicking here!

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OR get my complete Congruent and Similar Triangles Unit!

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This product should only be used by the teacher who purchased it. This product is not to be shared with other teachers. Please buy the correct number of licenses if this is to be used by more than one teacher.

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Total Pages
14 + answer keys
Answer Key
Included
Teaching Duration
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Standards

to see state-specific standards (only available in the US).
Explain how the criteria for triangle congruence (ASA, SAS, and SSS) follow from the definition of congruence in terms of rigid motions.
Use the definition of congruence in terms of rigid motions to show that two triangles are congruent if and only if corresponding pairs of sides and corresponding pairs of angles are congruent.

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