Congruent and similar shapes Congruent shapes Similar shapes.
October 29, 2019...•similar figures •corresponding parts •congruent exactly the same shape but...
Transcript of October 29, 2019...•similar figures •corresponding parts •congruent exactly the same shape but...
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)