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Determine Similar Triangles

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Determine Similar Triangles

TEKS Math: 7.5.A

(A) Generalize the critical attributes of similarity, including ratios within and between similar shapes

AU Math: ACMMG220

(Y9) Use the enlargement transformation to explain similarity and develop the conditions for triangles to be similar (ACMMG220)

CCSS Math: HSG.SRT.3

HSG.SRT.3 Use the properties of similarity transformations to establish the AA criterion for two triangles to be similar.

HSG.SRT.5

HSG.SRT.5 Use congruence and similarity criteria for triangles to solve problems and to prove relationships in geometric figures.

This math lesson teaches students how to use the Angle-Angle or the Equal Side Ratio theorem to determine if two triangles are similarity. The lesson includes research-based strategies and strategic questions that prepare students for standardized assessments. In this lesson, students will identify known information and determine which theorem applies, then use the theorem to prove the triangles' similarity. In addition to the lesson, there are two pages of independent practice and three pages of periodic review with questions modeled after standardized assessments.

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Grades:
High School
Subjects:
Math

Student Handout

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Additional Resources

Whiteboard

Standard Alignments:

TEKS Math: 7.5.A

(A) Generalize the critical attributes of similarity, including ratios within and between similar shapes

AU Math: ACMMG220

(Y9) Use the enlargement transformation to explain similarity and develop the conditions for triangles to be similar (ACMMG220)

CCSS Math: HSG.SRT.3

HSG.SRT.3 Use the properties of similarity transformations to establish the AA criterion for two triangles to be similar.

HSG.SRT.5

HSG.SRT.5 Use congruence and similarity criteria for triangles to solve problems and to prove relationships in geometric figures.

Special Programs:

Pueblo De Los Angeles High School


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Teach Fullscreen
Grades:
High School
Subjects:
Math

Student Handout

Download Student Handout

Additional Resources

Whiteboard

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Prove That Two Triangles are Similar

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