Working in pairs, geometry students will construct a dilation and consider the properties associated with the similar figures that are created to verify the properties of dilation. This activity can be done using dot or graph paper and...

Using indirect measurement, this video shows viewers how to find the height of a flagpole. The lecturer employs drawings as well as proportions to solve this problem, explaining each step. A useful resource to aid struggling learners and...

In this transformations instructional activity, 10th graders solve and complete 27 various types of problems that include similar figures and justifying answers. First, they dilate the shape shown using a zoom factor from the origin....

Using indirect measurement, this video shows viewers how to find the height of a flagpole. The lecturer employs drawings as well as proportions to solve this problem, explaining each step. A useful resource to aid struggling learners and...

Three angles of one triangle are equal to the corresponding angles in another triangle. Use a ratio of corresponding sides to find the scale factor. Actually, there are two scale factor values. The instructor will explain how to get both...

Here are four questions which require learners to examine four pairs of visual analogies and then choose a figure that completes a missing part of an analogy that is the same as the one shown. They then get to create their own visual...

Learners investigate properties of similar figures. In this properties of similar figures lesson, pupils construct similar figures using Cabri Jr. They dilate their figure to create a similar one, and discuss the relationships between...

English language learners work through geometric vocabulary. They answer 6 true or false questions where they determine whether 2 drawings or figures, line segments, or angles, correspond to one another.

Emerging math scholars evaluate pairs of parallellograms, triangles, rectangles, and trapezoids to determent wheter or not each is similar. This is an ideal homework assignment for reinforcing this skill

Proportional reasoning, ratio, and indirect measurement come to life in a series of seven lessons. Learners will convert measurements into customary and metric units. They also use real-world examples to solve problems involving scale as...

Similar figures have the same shape, the same corresponding angles, but different lengths of their corresponding sides. The teacher explains just what all that means. She demonstrates how to compare the two shapes to prove they are similar.

Use this mathematical figures worksheet to have learners decide if four sets of figures are congruent, similar or neither. They study two figures in order to solve six measurement problems, and answer one problem solving word problem.

Middle and high schoolers perform transformations. In this web based lesson, students explore dihedral figures. They use the web tools to translate, rotate, and reflect figures. Pupils identify lines of symmetry.

High schoolers explore the concept of scale factors.  For this scale factors lesson, students dilate polygons and determine the ratio of the perimeters and areas of an image and pre-image.  High schoolers use Ti-Nspires to graph...

Duane demonstrates how to find a missing length in figures that are similar. In this example he uses two similar triangles.

Learners explore scale factor as they create a scale drawing of a box, then determine the surface area and volume of the original and the scale drawing. The one page worksheet contains activities and procedures with four questions.   

Triangles provide a terrific opportunity to explore proportionality! In this similar figures activity, math minds read a brief explanation pertaining to ratios and proportions within triangles. Then they are turned loose to try solving...

A theoretical NASA project is the foundation of this worksheet, in which learners will word to determine congruent and similar figures. They solve 4 word problems where they measure, draw and identify congruent and similar figures from...

Although a rather complicated topic, this video manages to clearly explain the concept of solving problems involving similar triangles. It employs problem solving to determine whether two figures are similar triangles. In addition, it...

Building on concepts in the first part of the series on similar triangles, installment number two explores how to find the values for given angles in a triangle. These problems are solved by using algebra and ratios. A step-by-step...

Your class will use a TI calculator to drag vertices of rectangles and triangles to observe what happens to ratios of pairs of sides within each figure. They will apply the definition of similarity to identify similar shapes. The lesson...

In this geometry worksheet students explore similar polygons and determine measure of missing sides and angles. Students use indirect measurement with similar triangles and determine the area and volume of similar figures. The seven page...

In this similar figures learning exercise, students use proportions to solve 6 short answer and multiple choice questions.  Students use proportions to answer questions about map scales and height of trees given shadow lengths.

In this problem solving worksheet, students solve a variety of problems.  Problems include topics such as rate, time, similar figures, volume, and functions.  This one-page worksheet contains ten multiple-choice problems.  Answers may be...