[Free Registration/Login Required] This flipchart introduces students to quadrilaterals and how to classify them.

This site contains a wealth of problems that deal with the basic definitions of medians, altitudes, angle bisectors, and perpendicular bisectors or the defining characteristics of the different types of triangles. There are also...

The online assessment demonstrates knowledge of concepts utilized in Geometry. The multiple choice questions test students on quadrilaterals. Topics include rhombus, parallelogram, and interior angles.

The lesson discusses parallelograms. The resource examines facts, diagonals, and sides of a parallelogram. Explanations and examples are included.

A comprehensive tutorial from AAA Math that contains explanations, interactive practices and challenging games.

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

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

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

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

Angles are explained through examples and a video lesson. [0:48]

Are you looking for a very basic website that will explain the basic properties of a quadrilateral? Use this site to learn about the properties of a square, rhombus, rectangle, parallelogram, trapezoid, and kite. There are also some...

This lesson will demonstrate how to use slope, midpoint, and distance formulas to determine from the coordinates of the vertices if a quadrilateral is an isosceles trapezoid in a coordinate plane. It is 3 of 5 in the series titled...

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...

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 rectangle in a coordinate plane. It is 4 of 5 in the series titled "Coordinate...

Explore finding and measuring perimeter of figures.

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.

[Free Registration/Login may be required to access all resource tools.] This study guide looks at properties and theorems about trapezoids and kites.

This inquiry lesson explores the definitions of quadrilaterals and the properties of the diagonals of quadrilaterals to classify quadrilaterals. Students will work cooperatively to justify conclusions. This lesson plan was created by...

This study guide on circles covers some vocabulary terms, and inscribed angles and polygons. It is available for download with free registration.

An integrated geometry instructional activity on spatial sense in which students identify and use different shapes to create a tessellation. "Through a variety of modalities such as writing, music, art, poetry, and literature, students...

[Free Registration/Login may be required to access all resource tools.] Apply the properties of kites.

[Free Registration/Login may be required to access all resource tools.] This concept teaches students the properties of kites and how to apply them.

[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.

[Free Registration/Login may be required to access all resource tools.] This concept will teach students to use and apply the properties of trapezoids.