Practice 6-3 Proving That a Quadrilateral is a Parallelogram
In this quadrilateral worksheet, students prove that a quadrilateral is a parallelogram. They use algebra to determine the value of specified angles. This one-page worksheet contains 20 problems.
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Proving a Rectangle Is a Parallelogram
Take the time to prove what seems obvious. The resource provides pupils a figure of a rectangle, which they use to develop a proof showing that the rectangle is also a parallelogram. Scholars must rely on the definition of a rectangle to...
9th - 12th Math CCSS: Designed
Investigating Properties of Parallelograms
Given different parallelograms, geometers make conjectures about their properties. They then work in small groups to prove (or disprove) their conjectures. The activity provides many opportunities for making conjectures and critiquing...
7th - 10th Math CCSS: Designed
Module 6: Congruence, Construction, and Proof
Trace the links between a variety of math concepts in this far-reaching unit. Ideas that seem very different on the outset (like the distance formula and rigid transformations) come together in very natural and logical ways. This unit...
8th - 10th Math CCSS: Designed
New Review Proving a Quadrilateral Is a Parallelogram: Lesson
If it has the properties of a parallelogram, it must be a parallelogram. A segment of a playlist on geometry presents the converses of the properties of a parallelogram. Given a quadrilateral with specific characteristics, the video...
3 mins 8th - 11th Math CCSS: Adaptable
Three-dimensional Linear Transformations | Essence of Linear Algebra, Footnote
Bring it all to three dimensions. The short video points out that the discussion in the previous presentations in two dimensions also holds true for three dimensions. The sixth video in the series of 15 specifically makes the connections...
5 mins 11th - Higher Ed Math CCSS: Adaptable