october 29, 2019...•similar figures •corresponding parts •congruent exactly the same shape but...
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October 29, 2019 • Bellringer – GPA page 316 (30, 31)
Bellringer Answers
GPA page 316 (30, 31) 30. 80 mi. 31. 240 mi.
Then/Now
You have already used scales and scale factors to make scale drawings of objects. (Lesson 6–6)
• I CAN find missing measures of similar figures.
Vocabulary
• similar figures
• corresponding parts
• congruent
exactly the same shapebut different sizes
measurements are equaltilde is similar to
I is congruent to
Concept
If shapes are similar their anglesare congruent
Example 1 A
Find Measures of Similar Figures
A. The figures are similar. Find the missing measure. O
57 of is
FEED EX 8,25 in X 8.25
Example 1 A
Find Measures of Similar Figures
B. The figures are similar. Find the missing measure.
11 12
Example 1CYP A
A. The figures are similar. Find the missing measure.
X 6m
Example 1 B CYP
B. The figures are similar. Find the missing value of x.
FEx 4 Sam
Example 2
Find Measures of Similar Figures
NESTED BOXES Nested boxes are a series of boxes that fit inside each other. The faces of the boxes are similar rectangles. A face on a larger box has a length of 24 centimeters and a width of 13.5 centimeters. If the width of a face on a smaller box is 9 centimeters, what is the length of the smaller box?
WEX 16cm
Example 2
MAPS In the figure, ΔMNO is similar to ΔQPO. Find the distance across the park.
8mi X3mi
X 4,8mi
Homework
GPA page 307 (1-14 all)
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