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Common Core Standard HSG-CO.C.11 Questions

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.

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Grade 9 Symmetry and Transformations CCSS: HSG-CO.A.3, HSG-CO.C.11
Which of the following could be used to map this parallelogram onto itself?
Parallelogram v2
  1. reflection
  2. rotation
  3. reflection and rotation
  4. neither
Grade 10 Quadrilaterals CCSS: HSG-CO.C.11
Which properties of parallelogram ABCD are true?
Parallelogram ABCD v1
  1. Sides AB and DC are parallel.
  2. Angles B and C are supplementary.
  3. Angle A equals Angle C.
  4. The sum of all the angles is 360 degrees.
  5. All of the above

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