Activity
Texas Instruments

Texas Instruments: Math Today Wing Tabs Save Fuel

For Teachers 9th - 10th
Using the USA TODAY Infograph, 'Wing tabs save fuel', ratios and proportions will be used to explore the concept of similarity between a drawing/model and the actual dimensions. The effects of dilation (size change) on an image and...
eBook
CK-12 Foundation

Ck 12: Interactive Geometry: 3.4 Sss Triangle Congruence

For Students 9th - 10th Standards
Discover if two triangles are congruent it means that all corresponding angle pairs and all corresponding sides are congruent.
PPT
Sophia Learning

Sophia: Corresponding Parts: Lesson 5

For Students 9th - 10th Standards
This lesson will define the phrase corresponding parts (e.g. angles, sides, etc.). It is 5 of 5 in the series titled "Corresponding Parts."
eBook
CK-12 Foundation

Ck 12: Interactive Geometry: 3.5 Applications of Congruent Triangles

For Students 9th - 10th Standards
Learn how two triangles are congruent if and only if their corresponding sides and corresponding angles are congruent.
Activity
Texas Instruments

Texas Instruments: Angles and Transversals

For Teachers 9th - 10th
Students explore the relationships of angles formed when two parallel or non-parallel lines are cut by a transversal. This activity investigates the terms: Transversal, corresponding angles, alternate interior angles, alternate exterior...
Activity
Texas Instruments

Texas Instruments: Navigating Dc by Angles

For Teachers 9th - 10th
Students can use a map of Washington, DC, to travel to/from different tourist locations using vertical angles, corresponding angles, alternate interior angles, alternate exterior angles, same-side interior angles, and linear pairs.
Unit Plan
Sophia Learning

Sophia: Similarity

For Students 9th - 10th Standards
This learning tutorial describes the characteristics of similar figures and how to use scale factor and proportions to determine missing side lengths. The lesson includes PowerPoint presentations and videos demonstrating how to solve...
Website
Library of Congress

Loc: The Leonard Bernstein Collection

For Students 9th - 10th
The online version of the Library of Congress' collection. Content includes more than 400,000 items, including music and literary manuscripts, correspondence, photographs, audio and video recordings, fan mail, and other types of...
eBook
CK-12 Foundation

Ck 12: Interactive Geometry: 6.7 Applications of Similar Triangles

For Students 9th - 10th Standards
Learn how similar triangles have congruent corresponding angles and proportional corresponding sides.
eBook
CK-12 Foundation

Ck 12: Interactive Geometry: 13.3 Sas Triangle Congruence

For Students 9th - 10th Standards
See how two triangles are congruent it means that all corresponding angle pairs and all corresponding sides are congruent.
Activity
Texas Instruments

Texas Instruments: Math Today Ballooning Inside the Box

For Teachers 9th - 10th Standards
In this activity Using the USATODAY infograph, "Ballooning inside the box", students will explore geometric relationships using similar triangles. Identifying triangles with two pairs of congruent angles to explore similarity properties...
Unit Plan
Texas Education Agency

Texas Gateway: Generalizing Proportions From Similar Figures

For Students 7th - 8th Standards
Given a pair of similar figures, including dilations, students will be able to generalize that the lengths of corresponding sides are proportional.
Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: G Co Properties of Congruent Triangles

For Teachers 9th - 10th Standards
The goal of this task is to understand how congruence of triangles, defined in terms of rigid motions, relates to the corresponding sides and angles of triangles. Aligns with G-CO.B.7.
Handout
CK-12 Foundation

Ck 12: Geometry: Angles and Transversals Study Guide

For Students 9th - 10th Standards
This study guide on angles and transversals covers key terms, angle types formed by transversals, postulates and theorems about transversals, and how to prove if lines are parallel or perpendicular. It is available for download with free...
eBook
CK-12 Foundation

Ck 12: Interactive Geometry: 6.5 Sss Triangle Similarity

For Students 9th - 10th Standards
Explore and understand two triangles that are similar.
eBook
CK-12 Foundation

Ck 12: Interactive Geometry: 6.4 Sas Triangle Similarity

For Students 9th - 10th Standards
Explore and understand triangle similarity.
Lesson Plan
Other

Nearpod: Similar Figures & Proportionality

For Teachers 9th - 10th
In this lesson on similar figures and proportionality, students explore how to identify if figures are similar by applying their knowledge of corresponding angles and sides.
Activity
Texas Instruments

Texas Instruments: Parallel Lines Cut by a Transversal

For Teachers 9th - 10th
In this activity, students learn and increase their knowledge about the angles formed when parallel lines are cut by a transversal.
Unit Plan
Texas Education Agency

Texas Gateway: Generalizing Geometric Properties of Ratios in Similar Figures

For Students 9th - 10th Standards
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...
Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: My Book of Five

For Teachers K - 1st Standards
Students will be given double-sided counters/dots to complete this activity. They will take five counters in their cupped hands (or a cup), shake them around, pour them onto the desk. Next, they count how many counters are yellow and how...
Primary
Thomson Reuters

Find Law: Federalist Papers

For Students 9th - 10th
Full text of the Federalist Papers which express the general views of the individuals who formed the Federalist Party. Each paper is identified by date, subject, author and place of publication and is available for reading by clicking on...
Handout
Other

The Math Center: Laws of Exponents

For Students 9th - 10th Standards
Lists the laws of exponents on the left side of the page with corresponding examples on the right.

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