[Free Registration/Login may be required to access all resource tools.] In this lesson, students identify corresponding parts of congruent figures. They examine guided notes, review guided practice, watch instructional videos, and...

In this activity on transformations and congruence, 8th graders will investigate dilations, rotations, reflections, and translations on the coordinate plane and the figures that result from these transformations.

Learners apply their knowledge of surface area and volume to solve some problems for a box company. This lesson contains a detailed lesson plan, video explanations, rubrics, group work guidelines, slides containing problems, and...

[Free Registration/Login may be required to access all resource tools.] This concept introduces students to angles, congruent angles, and angle bisectors. Students examine guided notes, review guided practice, watch instructional videos...

Features a definition and a video lesson on congruent triangles with examples. [1:11]

This lesson will present the Hypotenuse-Leg Triangle Congruence Theorem. It is 5 of 5 in the series titled "Triangle Congruence Theorem (HL)."

This lesson will introduce the reflexive property of congruence, and the reflexive property of equality. It is 6 of 6 in the series titled "Reflexive Property of Congruence and Equality."

Search for common core lesson plans on geometric transformations.

[Free Registration/Login Required] This lesson helps teach congrence in triangles. Includes practice with postulates, theorems, and logical reasoning.

This lesson will demonstrate the use of CPCTC in triangle congruencey proofs. It is 2 of 4 in the series titled "CPCTC."

This lesson will define the phrase corresponding parts (e.g. angles, sides, etc.). It is 5 of 5 in the series titled "Corresponding Parts."

Learn all about the basic properties of a cone. This lesson targets the ASA congruence theorem using real-life examples and has interesting interactive practice questions.

[Free Registration/Login may be required to access all resource tools.] In this lesson students compare sides and angles in triangles. Students examine guided notes, review guided practice, watch instructional videos and attempt practice...

[Free Registration/Login Required] The teacher will use this lesson plan flipchart to review congruent shapes. The students will use the Activotes to assess knowledge of congruent shapes.

This lesson shows elementary learners how they can know that rigid motions like reflections, rotations, and translations create a shape congruent to the original.

This lesson will provide practice problems that involve solving for unknown angle and side measures of equilateral triangles. It is 5 of 5 in the series titled "Equilateral Triangle Interior Angles Practice Problems."

This mini-lesson introduces the properties of similarity and its role in geometry.

Explore pentominoes by determining congruent and non-congruent shapes.

[Free Registration/Login may be required to access all resource tools.] In this lesson, students learn how to translate a figure. They examine guided notes, review examples, watch instructional videos, and try practice problems.

For students who have ever played dominoes and Tetris, polyominoes will strike them as a great deal of fun. Teachers will see the educational benefits of working with similar and congruent shapes and rotating them in a plane. Exploration...

[Free Registration/Login may be required to access all resource tools.] This concept introduces the distance formula and uses it to prove that line segments are congruent. Students examine guided notes, review guided practice, watch...

If two triangles are similar, it means that all corresponding angle pairs are congruent and all corresponding sides are proportional. However, in order to be sure that two triangles are similar, you do not necessarily need to have...

[Free Registration/Login may be required to access all resource tools.] In this lesson, students identify corresponding parts of similar figures. Students examine guided notes, review guided practice, watch instructional videos and...

In this lesson, students learn how the diagonals of a rhombus are related. They use interactive sketches to learn about the properties of the angles and diagonals of squares, rectangles, rhombuses, parallelograms, and other...