Quadrilaterals-parallelograms, rectangles, and trapezoids-are thoroughly introduced in this lesson plan for upper elementary and middle school students. Lots of resources are linked to it to help support the teacher and students....

Formulas on calculating the area of a general quadrilateral and special cases of quadrilaterals.

Explains the basic concept of quadrangles (quadrilaterals} with step-by-step instructions and methods for solving specific problems on your own relating to this topic.

In this activity, students use the tools of Cabri Jr to test their knowledge of geometry. They investigate the properties of the shape formed by connecting the midpoints of adjacent sides of a quadrilateral.

Test your knowledge of the sum of angles inside a quadrilateral.

Test your knowledge of identifying quadrilaterals.

Determine quadrilaterals based on parallel sides.

Students will begin unit on quadrilaterals with basic overview of characteristics of parallelograms, rectangles, squares, rhombi, and isosceles and non-isosceles trapezoids. After the word wall is made, the teacher can use interactive...

This lesson focuses on polygons; a polygon is a closed, flat shape that has only straight sides. Polygons can have any number of sides and angles, but the sides cannot be curved.

[Free Registration/Login may be required to access all resource tools.] Learn about the Inscribed Quadrilateral Theorem and solve problems involving quadrilaterals inscribed in circles.

[Free Registration/Login may be required to access all resource tools.] This study guide reviews the formulas for area and perimeter of triangles and different kinds of quadrilaterals.

Understand that quadrilaterals that can be inscribed in circles are known as cyclic quadrilaterals.

[Free Registration/Login may be required to access all resource tools.] This concept teaches students properties of inscribed quadrilaterals in circles.

[Free Registration/Login may be required to access all resource tools.] Find the degree measure of unknown angles in given quadrilaterals.

This study guide on parallelograms covers types of quadrilaterals, properties of parallelograms and theorems that describe them, how to identify parallelograms, and special types of parallelograms. It is available for download with free...

Use the fact that opposite angles in an inscribed quadrilateral are supplementary to solve a few problems. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

The properties of parallelograms are explained through examples and a video lesson. [0:53]

[Free Registration/Login Required] Students will explore quadrilaterals inscribed in circles with this interactive activity. Click 'Challenge Me' to answer a practice question.

A big word for a big idea! After being introduced to the term quadrilateral, the students will learn the characteristics of them and have an opportunity to create various quadrilaterals.

Challenge problems involving the coordinates of the vertices of the quadrilaterals Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

[Free Registration/Login Required] Students will move the vertices of the quadrilateral to form the congruent quadrilateral. Click learn more to watch a video and click challenge me to answer a practice question.

A set of four practice problems finding the points of quadrilaterals on a coordinate plane.

A comprehensive guide for learning all about Heron's Formula and quadrilaterals with numerous solved examples.

A succinct test for assessing geometry concepts. Assessment is scored online giving immediate feedback. An excellent assessment tool.