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Five-Minute Check (over Lesson 12–1)
Main Idea and Vocabulary
Key Concept: Pythagorean Theorem
Example 1:Find the Length of the Hypotenuse
Example 2:Real-World Example
Example 3:Find the Length of a Leg
Example 4:Test Example
BrainPOP: The Pythagorean Theorem
1. A
2. B
3. C
4. D
A B C D
0% 0%0%0%
A. 3.5 cm
B. 4.9 cm
C. 7.4 cm
D. 8.6 cm
Find the length of the hypotenuse for a right triangle that has legs measuring 5 centimeters and 7 centimeters.
SPORTS A gymnastics tumbling floor is in the shape of a square with sides 12 meters long. If a gymnast flips from one corner to the opposite corner, about how far has he flipped?
1. A
2. B
3. C
4. D
0% 0%0%0%
A. about 42.6 in
B. about 51.3 in
C. about 57.8 in
D. about 64.5 in
SEWING Rose has a rectangular piece of fabric measuring 28 inches in length and 16 inches in width. She wants to decorate the fabric with a piece of lace sewn across both diagonals. How much lace will Rose need to complete the project?
1. A
2. B
3. C
4. D
A B C D
0% 0%0%0%
A. 13 in.
B. 15.1 in.
C. 18.7 in.
D. 21.3 in.
Find the missing measure of the triangle shown. Round to the nearest tenth if necessary.
Televisions are measured according to their diagonal measure. If the diagonal of a television is 36 inches, and its height is 21.6 inches, what is its width?
Read the ItemThe diagonal of the television is the hypotenuse of a right triangle. Write an equation and solve for b.
A 42.0 in. B 28.8 in. C 14.4 in. D 57.6 in.
1. A
2. B
3. C
4. D0% 0%0%0%
A. about 43.6 ft
B. about 52.0 ft
C. about 61.9 ft
D. about 65.7 ft
SWIMMING The diagonal of a rectangular swimming pool measures 60 feet. Find the length of the pool if the width measures 30 feet. Round to the nearest tenth if necessary.
Five-Minute Check (over Lesson 12–1)
Image Bank
Math Tools
The Pythagorean Theorem
1. A
2. B
3. C
4. D
A B C D
0% 0%0%0%
(over Lesson 12-1)
A. 14
B. 13
C. 12
D. 11
Estimate to the nearest whole number.
1. A
2. B
3. C
4. D
A B C D
0% 0%0%0%
(over Lesson 12-1)
A. 13
B. 14
C. 15
D. 16
Estimate to the nearest whole number.
1. A
2. B
3. C
4. D
A B C D
0% 0%0%0%
(over Lesson 12-1)
A. 6
B. 7
C. 8
D. 9
Estimate to the nearest whole number.
1. A
2. B
3. C
4. D
A B C D
0% 0%0%0%
(over Lesson 12-1)
A. 4.3
B. 4.1
C. 3.8
D. 1.4
Use a calculator to find to the nearest tenth.
1. A
2. B
3. C
4. D
A B C D
0% 0%0%0%
(over Lesson 12-1)
A. 8.7
B. 8.9
C. 9.1
D. 9.3
Use a calculator to find to the nearest tenth.
1. A
2. B
3. C
4. D
A B C D
0% 0%0%0%
(over Lesson 12-1)
Identify the number with the greatest value.
A. (–2)2
B.
C.
D. 3.14