Copy of Properties of a Parallelogram

Author:
Judith Hilinski, Dana Brandl, Kaitlyn Valint
Topic:
Parallelogram
Use this applet to discover properties of every parallelogram.
You will not use the "show slopes" button because we are not interested in slopes.
Click on any vertex of the quadrilateral to change its size to help you answer the questions below.

Click on the "show diagonals" button. What is true of segments DE and EB?

Select all that apply
  • A
  • B
Check my answer (3)

What is true of segments AE and EC?

Select all that apply
  • A
  • B
Check my answer (3)

Is segment DE congruent to segment AE? Explain your answer.

Check my answer

Uncheck the "show diagonals" button and click on the "show segment lengths" button. Which pair of segments are congruent?

Select all that apply
  • A
  • B
  • C
  • D
Check my answer (3)

Move the sides around until all sides have an equal length. Is the resulting parallelogram a square? Explain.

Check my answer

If the resulting parallelogram is not a square, what would it be?

Select all that apply
  • A
  • B
  • C
Check my answer (3)

Uncheck the "show segment lengths" button. Click on the angles button. Which angle pairs are congruent?

Select all that apply
  • A
  • B
  • C
  • D
Check my answer (3)

Using your calculator add angles A and angle D together (don't forget to include decimals). What is your answer?

Select all that apply
  • A
  • B
  • C
Check my answer (3)

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