Unit: Unit 4 Course: Geometry Triangle Congruence Topic: Week 11 – Day: 54 Proofs of Congruent Triangles Common Core State Standard: Mathematical Practice: CCSS.MATH.CONTENT.HSG.CO.B.7 CCSS.MATH.PRACTICE.MP7 Use the definition of congruence in terms of rigid Look for and make use of motions to show that two triangles are congruent structure. if and only if corresponding pairs of sides and corresponding pairs of angles are congruent. Objective: I can statement: Show Congrence of image and object distance in I can show congrence of dilation if scale factor is -1. image and object distance in dilation if the scale factor is - Procedures: Materials: 1. Students will complete the bellringer. Bellringer 54 2. Students will work in groups of at least 3. They Day 54 Activities will draw a triangle and its image under a dilation Day 54 Practice with a scale factor of -1 Day 54 Presentation 3. The presentation will be used to look for Day 54 Exit Slip misconceptions and encourage discussion. 4. Students will complete the exit slip before leaving for the day.
Unit: Unit 4 Triangle Congruence Course: Geometry Topic: Week 11 – Proofs of Congruent Triangles Day: 54 Common Core State Standard: CCSS.MATH.CONTENT.HSG.CO.B.7 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. Mathematical Practice: CCSS.MATH.PRACTICE.MP7 Look for and make use of structure. Objective: Show Congrence of image and object distance in dilation if scale factor is -1. I can statement: I can show congrence of image and object distance in dilation if the scale factor is Procedures: 1. Students will complete the bellringer. 2. Students will work in groups of at least 3. They will draw a triangle and its image under a dilation with a scale factor of -1 3. The presentation will be used to look for misconceptions and encourage discussion. 4. Students will complete the exit slip before leaving for the day. Materials: Bellringer 54 Day 54 Activities Day 54 Practice Day 54 Presentation Day 54 Exit Slip -
Geometry-Complete-Unit-4.docx