Concept Quiz: Properties of Parallelograms

50 Minute Class, Curriculum, Geometry

Quiz Message

Learning Goal: Assess conceptual understanding and procedural fluency for properties of parallelograms.


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  • 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

3 thoughts on “Concept Quiz: Properties of Parallelograms

    1. Hey Denise. I’m actually having trouble as well. I’m thinking angles 3 and 4 can be proven congruent with something like the angle addition postulate, but I’m not sure how to get there yet.

      What if we went ahead and added to the given information that angle 3 is congruent to angle 4? Would that make it too easy for 100 level? Here’s my rough sketch of a solution for the problem with that information added.

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