Learning Goal: Wrap up and build proficiency with properties of parallelograms by promoting partner discussion and critique.

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Classwork

• Estimation – San Antonio
• Warm Up
• Practice
• Fun With a Sticky (Andrew Stadel)

Finished Early?

• Spiraling Practice

Answers

• Link to Answers

 Standards

• Common Core
  • 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.
• TEKS
  • G.5(A) – investigate patterns to make conjectures about geometric relationships, including angles formed by parallel lines cut by a transversal, criteria required for triangle congruence, special segments of triangles, diagonals of quadrilaterals, interior and exterior angles of polygons, and special segments and angles of circles choosing from a variety of tools
  • G.6(E) – prove a quadrilateral is a parallelogram, rectangle, square, or rhombus using opposite sides, opposite angles, or diagonals and apply these relationships to solve problems