Texas Education Agency
Texas Gateway: Area of Triangles, Parallelograms, and Trapezoids
These activities provide an opportunity for students to explore the area formulas for triangles, trapezoids, and parallelograms.
CK-12 Foundation
Ck 12: Geometry: Parallelograms
[Free Registration/Login may be required to access all resource tools.] Apply parallelogram theorems.
Scholastic
Scholastic: Study Jams! Math: Measurement: Area of a Parallelogram
Determine the area of a parallelogram with this step by step interactive lesson.
CK-12 Foundation
Ck 12: Elem Math: Determining Unknown Angles in Parallelograms
[Free Registration/Login may be required to access all resource tools.] Students watch a video and attempt practice problems on how to determine missing angles in a parallelogram.
CK-12 Foundation
Ck 12: Unknown Dimensions of Parallelograms Grades 6 7
[Free Registration/Login may be required to access all resource tools.] Find the unknown dimensions of a parallelogram given its area and another measurement.
CK-12 Foundation
Ck 12: Geometry: Parallelograms
[Free Registration/Login may be required to access all resource tools.] This concept teaches students properties of and theorems about parallelograms and how to apply them.
CK-12 Foundation
Ck 12: Unknown Dimensions of Parallelograms Grade 7
[Free Registration/Login may be required to access all resource tools.] Find unknown dimensions of parallelograms given area and one other dimension.
University of Georgia
University of Georgia: Inter Math: Parallelograms
This site gives the general definition of a parallelogram with examples and questions for the reader to ponder about characteristics of parallelograms. There are also links to related terms, everyday examples, challenging problems, more...
Texas Instruments
Texas Instruments: Parallelograms: Discovering Their Properties
Students use the TI-89 with CABRI Geometry to discover properties of parallelograms. They will construct a figure and use the definition to discover the figure is a parallelogram.
Texas Instruments
Texas Instruments: Properties of Parallelograms
This activity shows the student how to construct a parallelogram using Cabri Geometry. Questions are asked after the construction.
Texas Instruments
Texas Instruments: Properties of Parallelograms
In this activity, students go through the process of proving a quadrilateral to be a parallelogram. They understand the various characteristics of a parallelogram.
CK-12 Foundation
Ck 12: Perimeter of Parallelograms: Around a Trampoline
[Free Registration/Login Required] Students move the points on the parallelogram to determine the perimeter. Click challenge me to answer practice questions and click learn more to watch a video.
Quia
Ixl Learning: Parallelograms
Brush up on your math skills pertaining to parallelograms then try some practice problems to test your understanding.
CK-12 Foundation
Ck 12: Geometry: Parallelogram Classification
[Free Registration/Login may be required to access all resource tools.] Classify a parallelograms as a rhombus, rectangle, or square.
CK-12 Foundation
Ck 12: Geometry: Quadrilaterals That Are Parallelograms
[Free Registration/Login may be required to access all resource tools.] This concept teaches students how to prove that a quadrilateral is a parallelogram given the properties of parallelograms.
Math Planet
Math Planet: Geometry: Properties of Parallelograms
The properties of parallelograms are explained through examples and a video lesson. [0:53]
CK-12 Foundation
Ck 12: Geometry: Estimation of Parallelogram Area in Scale Drawings
[Free Registration/Login may be required to access all resource tools.] In this lesson students estimate actual areas of parallelograms in scale drawings. Students examine guided notes, review guided practice, watch instructional videos...
CK-12 Foundation
Ck 12: Geometry: Area of a Parallelogram
[Free Registration/Login may be required to access all resource tools.] In this lesson students find the area of a parallelogram given its base and height. Students examine guided notes, review guided practice, watch instructional videos...
Khan Academy
Khan Academy: Area of Parallelograms
Practice finding the area of parallelograms given base and height. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: Find Missing Length When Given Area of a Parallelogram
Find the base or height of a parallelogram when given the other and the area. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
CK-12 Foundation
Ck 12: Geometry: Quadrilaterals That Are Parallelograms
[Free Registration/Login may be required to access all resource tools.] Prove a quadrilateral is a parallelogram.
CK-12 Foundation
Ck 12: Geometry: Area of a Parallelogram
[Free Registration/Login may be required to access all resource tools.] This concept teaches students how to find the area of a parallelogram. Students examine guided notes, review guided practice, watch instructional videos and attempt...
Geometry Help
Geometry Help: Parallelograms
Explains the basic concept of parallelograms with step-by-step instructions and methods for solving specific problems on your own relating to this topic.
Quia
Ixl Learning: Area of Parallelograms
Brush up on your math skills relating to the area of parallelograms then try some practice problems to test your understanding.
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