7.03 Parallelograms

Task #1

Be sure you complete the 7.03 Lifts Discussion located in the Introduction of this lesson.

Task #2

Download, complete, and submit 7.03 Parallelograms.

Task #3

We know that a quadrilateral has four sides. Parallelograms have four sides as well. However, all quadrilaterals are not parallelograms. To prepare for the next lesson, let’s use our knowledge of the properties of a parallelogram to decide which quadrilaterals are parallelograms. Go to Geogebra: Proving Parallelograms. Choose two of the cases given. For each case you choose:

• Decide if enough information is given to prove the quadrilateral is a parallelogram (yes or no)
• State the case as a rule. (For example, if a quadrilateral has two pairs of sides with equal slopes....)
• Explain why, using theorems and properties given in earlier lessons and units.

Download, complete, and submit 7.03 Explore.