Properties of Parallelograms (Day 5)

Curriculum, Geometry, 50 Minute Class

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


Note

  • 1 problem from practice and all spiraling problems taken from New Visions

Classwork

Finished Early?

 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