Curated OER
Similar Figures
In this similar figures worksheet, students solve and complete 4 different problems. First, they write a proportion and substitute. Then, students find the cross products and simplify. Finally, they divide each side to find the value in...
Curated OER
Leveled Problem Solving Similar and Congruent Polygons
In this similar and congruent polygons worksheet, students learn to solve problems using similar and congruent polygons. Students solve six problems.
Curated OER
Leveled Problem Solving Using Proportions with Similar Polygons
In this proportions and similar polygons worksheet, students solve the problems that use proportions, rations, fractions, and similar polygons.
Curated OER
Same Worksheet
This basic shapes learning exercise has students look at the shapes in 3 rows, and circle the shape that is the same as the first shape in each row. Very basic shape recognition.
Curated OER
II Similar
Students, through lecture and guided practice, discover the properties of similar triangles. They use given measurements of one triangle to find a missing measurement of a similar triangle. They apply this knowledge in real-life...
Curated OER
THE MEAN INDEX CARD
Students cut an index card to create three similar right triangles and explore the congruencies and proportions that exist. They investigate the properties of lines and concepts of congruency, similarity, tangency and symmetry of...
Curated OER
Simply Similar at Sea: Simple Triangles
Tenth graders answer a variety of problems based on similar triangle and learn about the rule of thumb. They will test the rule of thumb by estimating the distance to an object in the classroom.
Curated OER
Similar or Not?
Fifth graders define the meaning of similar and congruent using concrete objects. They make similar and congruent figures using geoboards. They draw their figures on dot paper, and color their designs.
McGraw Hill
Glencoe: Self Check Quizzes 2 Similar Figures
Use Glencoe's Math Course 2 randomly generated self-checking quiz to test your knowledge of similar figures. Each question has a "Hint" link to help. Choose the correct answer for each problem. At the bottom of the page click the "Check...
Texas Education Agency
Texas Gateway: Generalizing Geometric Properties of Ratios in Similar Figures
Students will investigate patterns to make conjectures about geometric relationships and apply the definition of similarity, in terms of a dilation, to identify similar figures and their proportional sides and congruent corresponding...
Texas Education Agency
Texas Gateway: Investigating and Applying Dimension Changes: Area
The student will describe the effects of changing one or more dimensions on the area of a figure.
Texas Education Agency
Texas Gateway: Making Conjectures About Similar Figures
Given problem situations involving similar figures, the student will use and extend similarity properties and transformations to explore and justify conjectures about the given figures.
Varsity Tutors
Varsity Tutors: Hotmath: Practice Problems: Similarity and Proportion Exercises
Twenty-four problems cover the topic of similarity and proportion in various settings. 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"...
Texas Education Agency
Texas Gateway: Defining Similarity
Given similar figures, the student will use critical attributes to define similarity.
CPALMS
Cpalms: Why Are Circles Similar?
[Free Registration/Login Required] A comprehensive lesson plan for teaching how to prove that all circles are similar by using three types of transformations.
CPALMS
Cpalms: All Circles Are Similar
[Free Registration/Login Required] A formative assessment where students are asked to demonstrate how to prove that two circles are similar. Includes downloadable worksheet and a rubric, as well as followup questions to clarify or deepen...
Math.com
Math.com: Similar Figures
This example provides a clear explanation of how to compare figures to see if they are similar and the formula to determine if the ratios are equal. Interactive practice activities are provided.
Texas Instruments
Texas Instruments: Similar Figures
In this activity, students investigate the properties of similar triangles.
Texas Instruments
Texas Instruments: Similarity and Dilations
Students will discover properties of similar figures using the TI-89 and CABRI Geometry II to use dilations to dynamically manipulate figures.
Texas Instruments
Texas Instruments: Set Design
In this activity, students can use similarity concepts, and the dimensions of the carvings on Mt. Rushmore to create a proportional representation of the carvings for a stage backdrop.
Science and Mathematics Initiative for Learning Enhancement (SMILE)
Smile: Similarity
This site contains a lesson plan for high school age learners. The objective is to discover the factor of proportionality in similar polygons and to relate this factor to the perimeters and areas of similar polygons.
Beacon Learning Center
Beacon Learning Center: Sam's Similar Shapes
Students learn about and practice identifying similar figures in this interactive web lesson.
Ministry of Education and Universities of the Region of Murcia (Spain)
Ministerio De Educacion Y Ciencia: Triangulos Semejantes
Learn how to recognize and construct similar triangles with these interactive activities.
Ministry of Education and Universities of the Region of Murcia (Spain)
Ministerio De Educacion Y Ciencia: Homotecia Y Semejanza
In Spanish. In this interactive activity you can understand and know how to apply direct and inverse homothety to simple shapes, apply Thale's theorem, construct similar polygons and work out their related measurements and know how to...