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Unit 1, Lesson 2

A Triangle’s Sides

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Integrated Math 2

Practice

Problem 1
Student Task Statement
Which 3 lengths create a triangle?
3, 4, 7
10, 10, 25
15, 15, 25
17, 20, 50

Practice

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Problem 2

Student Task Statement

Triangle

has two known side lengths. Side

is 17 inches long, and side

is 8 inches long. What must be true about the length of side

?

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Problem 3

Student Task Statement

A school bus picks up Han, Diego, and Lin. First, the bus picks up Han from his house. Then the bus drives 8 kilometers along a straight road and picks up Lin. Next, the bus picks up Diego. The bus drives 10 kilometers from Lin down another straight road to Diego. Could the distance between Han’s house and Diego’s house be 20 kilometers? Explain your reasoning.

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Problem 4

from an earlier course

Student Task Statement

Which of the these rigid motions maps triangle to triangle ?

Rotate triangle 90 degrees clockwise around point .

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Problem 5

from an earlier course

Student Task Statement

Quadrilateral is transformed and the image is . Which of the following rigid motions maps quadrilateral to quadrilateral ?

Rotate 90 degrees clockwise around point .

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Translate triangle

by a directed segment that takes point

to

.

Reflect triangle

over side

.

not enough information

Translate quadrilateral

by a directed segment that takes point

to

.

Reflect

over side

.

not enough information

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A Triangle’s Sides

Practice

Problem 1

Student Task Statement

Problem 2

Student Task Statement

Problem 3

Student Task Statement

Problem 4

Student Task Statement

Problem 5

Student Task Statement

Lesson 2 Resources