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1 Topic: Week 23 Parallelogram Proofs Day: 111 CCSS.MATH.CONTENT.HSG.CO.C.11 Prove theorems about parallelograms. Theorems include: opposite sides are congruent, opposite angles are congruent, the diagonals of a parallelogram bisect each other, and conversely, rectangles are parallelograms with congruent diagonals. Prove that Opposite sides of a paralleloggram are equal 1. Students will complete the bellringer. 2. Students will work in groups of at least 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. CCSS.MATH.PRACTICE.MP8 Look for and express regularity in repeated reasoning. I can prove that Opposite sides of a paralleloggram are equal Bellringer 111 Day 111 Activities Day 111 Practice Day 111 Presentation Day 111 Exit Slip

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3 Topic: Week 23 Parallelogram Proofs Day: 112 CCSS.MATH.CONTENT.HSG.CO.C.11 Prove theorems about parallelograms. Theorems include: opposite sides are congruent, opposite angles are congruent, the diagonals of a parallelogram bisect each other, and conversely, rectangles are parallelograms with congruent diagonals. Prove that Opposite angles of a paralleloggram are equal 1. Students will complete the bellringer. 2. Students will work in groups of at least 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. CCSS.MATH.PRACTICE.MP8 Look for and express regularity in repeated reasoning. I can prove that Opposite angles of a paralleloggram are equal Bellringer 112 Day 112 Activities Day 112 Practice Day 112 Presentation Day 112 Exit Slip

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5 Topic: Week 23 Parallelogram Proofs Day: 113 CCSS.MATH.CONTENT.HSG.CO.C.11 Prove theorems about parallelograms. Theorems include: opposite sides are congruent, opposite angles are congruent, the diagonals of a parallelogram bisect each other, and conversely, rectangles are parallelograms with congruent diagonals. Prove that diagonals of a parallelogram are not equal. Show that at their intersection, opposite angles are equal andadjacent angles are supplementary angles. 1. Students will complete the bellringer. 2. Students will work in groups of at least 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. CCSS.MATH.PRACTICE.MP8 Look for and express regularity in repeated reasoning. I can prove that diagonals of a parallelogram are not equal. I can show that at their intersection, opposite angles are equal andadjacent angles are supplementary angles. Bellringer 113 Day 113 Activities Day 113 Practice Day 113 Presentation Day 113 Exit Slip

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7 Topic: Week 23 Parallelogram Proofs Day: 114 CCSS.MATH.CONTENT.HSG.CO.C.11 Prove theorems about parallelograms. Theorems include: opposite sides are congruent, opposite angles are congruent, the diagonals of a parallelogram bisect each other, and conversely, rectangles are parallelograms with congruent diagonals. Prove that diagonals of a rectangle are equal. Show that at their intersection, opposite angles are equal andadjacent angles are supplementary angles. 1. Students will complete the bellringer. 2. Students will work in groups of at least 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. CCSS.MATH.PRACTICE.MP8 Look for and express regularity in repeated reasoning. Prove that diagonals of a rectangle are equal. Show that at their intersection, opposite angles are equal andadjacent angles are supplementary angles. Bellringer 114 Day 114 Activities Day 114 Practice Day 114 Presentation Day 114 Exit Slip

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9 Topic: Week 23 Parallelogram Proofs Day: 115