Find missing side lengths in similar figures. Find scale factor between similar figures.
?
?
?
?
In this lesson, students apply the concept of scale factor to determine if shapes are similar with proportional corresponding sides.
?
Two triangles are shown below. The measure of angle $$A$$ is equal to the measure of angle $$D$$. (Figures are not drawn to scale.)
Are triangles $${{ABC}}$$ and $${{EFG}}$$ similar? Explain your answer.
Sketch a triangle that is similar to either triangle $${{ABC}}$$ or triangle $${{EFG}}$$. Label the side lengths.
Triangle $${{ABC}}$$ is similar to triangle $${{ADE}}$$. The measure of $${\overline{AB}}$$ is approximately $${3.16}$$.
?
The following resources include problems and activities aligned to the objective of the lesson that can be used to create your own problem set.
?
In the diagram below, you have triangle $${ABC}$$ and triangle $${A'B'C'}$$. Based on the information given, are the two triangles similar? Explain your answer.
Grade 8 Mathematics > Module 3 > Topic B > Lesson 11 of the New York State Common Core Mathematics Curriculum from EngageNY and Great Minds. © 2015 Great Minds. Licensed by EngageNY of the New York State Education Department under the CC BY-NC-SA 3.0 US license. Accessed Dec. 2, 2016, 5:15 p.m..
Modified by The Match Foundation, Inc.In the diagram below, triangle $${ABC}$$ is similar to triangle $${DEF}$$. Use the information to answer the two parts below.
Grade 8 Mathematics > Module 3 > Topic B > Lesson 11 of the New York State Common Core Mathematics Curriculum from EngageNY and Great Minds. © 2015 Great Minds. Licensed by EngageNY of the New York State Education Department under the CC BY-NC-SA 3.0 US license. Accessed Dec. 2, 2016, 5:15 p.m..
Modified by The Match Foundation, Inc.?