Given two similar triangles and some of their side lengths, find a missing side length. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

Given two similar triangles and some of their side lengths, find a missing side length. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

Brush up on your math skills relating to similar triangles then try some practice problems to test your understanding.

In this activity, students will investigate the relationship among the similar triangles formed when a segment is constructed parallel to one side of a triangle. They will explore the various ratios that exist between the lengths of the...

[Free Registration/Login may be required to access all resource tools.] Apply the fact that the altitude of a right triangle creates similar triangles.

[Free Registration/Login may be required to access all resource tools.] This concept teaches students how to apply similarity to solve for missing information in inscribed right triangles.

Given two triangles with some of their side measures, determine whether the triangles are similar or not. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

Given two triangles with some of their angle measures, determine whether the triangles are similar or not. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

The geometry tutorial investigates similar triangles. Students learn about the definitions and theorems of similar triangles. Topics included are angle-angle, side-side-side, and side-angle-side similarity. The activity has several...

The geometry tutorial investigates similar triangles. The activity has several examples with detailed solutions.

Find a quick, concise explanation of similar triangles. Examples are given and clearly explained.

In this activity, students investigate the properties of similar triangles.

Twelve problems cover the topic of similar triangles. They are given with each step to the solution cleverly revealed one at a time. You can work each step of the problem then click the "View Solution" button to check each step of your...

This lesson explains why similar triangles can be used to make indirect measurements, and provides an example.

[Free Registration/Login may be required to access all resource tools.] Determine whether triangles are similar, congruent, or neither.

[Free Registration/Login may be required to access all resource tools.] This concept teaches students to decide whether or not two triangles are similar using SSS Similarity.

In this set of questions, students practice identifying side-side-side similarity among triangles. Includes hints.

[Free Registration/Login may be required to access all resource tools.] This concept teaches students to decide whether or not two triangles are similar using SAS Similarity.

A complete reference guide to similar triangles and polygons. It provides definitions and interactive activities that enhance further explanation.

Test your knowledge of similar triangles and shapes.

Students can use Cabri Jr. to discover two properties of similar triangles: corresponding angles are congruent and corresponding sides are proportional.

Test your knowledge on the attributes of triangles. There are eleven levels that may be completed with or without a timer.

The student will apply and prove the definition of similar triangles and identify and apply the relationships that exist when an altitude is drawn to the hypotenuse of a right triangle, including the geometric mean.

This lesson explains why similar triangles can be used to make indirect measurements, and provides an example. It is 5 of 5 in the series titled "Using Similar Triangles to Make Indirect Measurements."