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Find the value of each expression.
a. 1.6 – 0.3 0.4 + 2.6 b. 4.5 – 0.024 + 1.8 – 0.36
COURSE 1 LESSON 8-6
4.08 5.916
Congruent and Similar Figures
8-6
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In Lesson 8-5 You learned to identify regular
polygons and to classify quadrilaterals.
What You Learned
Review
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8-6
4.2.6 A.3 Identify similar figures.
pg 392-395
Pg 124-125 Daily Notetaking Guide
Materials:
Standards:
Materials
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In Lesson 8-6 To identify congruent and similar
figures.
What You’ll Learn
Why Learn This?
Designers use congruent figures in architecture.
You can fit some congruent figures together without
gaps or spaces..
Introduction
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Vocabulary
Congruent figures have congruent corresponding
sides and congruent corresponding angles. The
matching sides and angles are corresponding
parts.
Similar Figures – are figures that have the same
shape but not necessarily the same size.
Vocabulary
Congruent Figures – are figures that have exactly
the same size and shape.
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COURSE 1 LESSON 8-6
Congruent and Similar Figures
(For help, go to Lesson 8-3.)
Classify each triangle by its sides.
1. How can you tell that two angles are congruent?
8-6
Vocabulary Review
They have the same measure.
2. 3
two congruent
sides: isosceles
no congruent
sides: scalene
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Are the pentagons congruent?
COURSE 1 LESSON 8-6
The corresponding sides and angles are congruent,
so the pentagons are congruent.
Congruent and Similar Figures
8-6
Quick Check
![Page 10: Congruent and Similar Figures - Mr. Lusquiños' 6th Grade ...mrlmath.weebly.com/uploads/1/7/0/0/...6_congruent_and_similar_fig… · Congruent and Similar Figures (For help, go to](https://reader034.vdocument.in/reader034/viewer/2022043009/5f9c91aecb7a191cd622bbb3/html5/thumbnails/10.jpg)
Which triangle appears to be similar to HJK? Confirm
your answer by finding whether the corresponding sides are
proportional.
COURSE 1 LESSON 8-6
a.
b.
=
Similar
4
2
6
3
=
Not similar
/ 4
20
6
25
Congruent and Similar Figures
8-6
Quick Check
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Are the figures congruent or similar? Explain.
COURSE 1 LESSON 8-6
The two rectangles are not congruent because
their corresponding sides are not congruent.
The two rectangles are similar because their corresponding
sides are proportional and their corresponding angles are congruent.
Congruent and Similar Figures
8-6
Quick Check
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How do you identify similar figures?
Similar figures have congruent corresponding
angles and proportional corresponding sides.
Closure
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Tell whether the figures are congruent or similar.
1. 2.
COURSE 1 LESSON 8-6
similar congruent
Congruent and Similar Figures
8-6
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Class work
Work
pg 394 – 395 1 - 24
Homework
pg 369 Practice 8-6
pg 370 Guided Problem Solving 8-6
Work