Learn about the perimeter of a parallelogram with this helpful reference tool. Provides a detailed definition, examples, and an interactive activity that enhances further explanation. Includes links to related topics.

Students will find the area of a parallelogram and the area of a triangle.

[Free Registration/Login Required] Students will move the points on the parallelogram to explore what happens to the slope. Click learn more to watch a video and click challenge me to answer a practice question.

[Free Registration/Login Required] Students will move the interactice quadrilateral to determine which quads are parallelograms. Click learn more to watch a video and click challenge me to answer a practice question.

[Free Registration/Login Required] Students will use the classify different shapes by changing the points on the given shape. Click learn more to watch a video and click challenge me to answer a practice question.

[Free Registration/Login Required] Students will use the interactive activity to complete the venn diagram. Click learn more to watch a video and click challenge me to answer a practice question.

This tutorial provides a brief introduction about what area is, then gives the formulas for area of a square, rectangle, parallelogram, trapezoid, triangle, and circle. Examples of each formula are provided.

In this unit, students learn two basic methods for determining the magnitudes of the components of a vector directed in two dimensions. The two methods of vector resolution students will examine are the parallelogram method the...

Students understand the concepts of vectors and their resultant. They get acquainted with the parallelogram law of vector addition.

In this activity, students create geometric figures, and use analytic and coordinate geometry to investigate their attributes. They go through the process of proving that a quadrilateral is a parallelogram.

This site provides definitions of different types of polygons and figures.

How would you find the area of a polygon or circle? Explore this concept with engaging activities at this test prep site. Here you will find detailed problem solving strategies with accompanying visuals, a reference table with formulas,...

A guide to support parents as they work with their students with time, shapes, and fractions as equal parts of shapes.

Learn how to enlarge drawings, figure out how much tile to buy to cover a specific floor, and learn about area and perimeter. These and other lesson plans are provided, including a fun interdisciplinary plan featuring dragons.

Here is a partial list of theorems, postulates, and properties.

Use this interactive tool to learn how to find the area of a parallelogram. Click on "Instructions" for details on how to use this tool. Click on "Explore" for more ideas.

Shodor Education Foundation provides an applet that "allows the user to explore the world of transformations, reflections, and rotations. It allows the user to translate triangles, squares, and parallelograms on both the x and y-axes."

Calculate certain variables of a parallelogram depending on the inputs provided. Calculations include side lengths, corner angles, diagonals, height, perimeter, and area of parallelograms.

This lesson will demonstrate how to use slope, midpoint, and distance formulas to determine from the coordinates of the vertices if a quadrilateral is a parallelogram in a coordinate plane. It is 1 of 6 in the series titled "Coordinate...

Learn about the diagonals of a parallelogram with this helpful reference tool. Provides a detailed definition and an interactive activity that enhance further explanation. Includes links to related topics.

This lesson presents the idea that the area of any right triangle is exactly half of a certain rectangle, and contains varied exercises for students.

[Free Registration/Login Required] This flipchart reviews segments, parallel and perpendicular lines and then introduces polygons including quadrilaterals. It has many real world examples of shapes and includes Activote assessment.

[Free Registration/Login Required] This flipchart helps students to analyze and compare various two-dimensional shapes according to the vertices, sides and parallel lines. It features "containers" created in Version 3 (can be used with...

Learn how to find the areas and perimeters of triangles and special quadrilaterals.