Similar Triangles and the Coordinate Plane

Similar Triangles and the Coordinate Plane

Chapter 7 Lesson 6 (Alef Lesson 143)

Multiple Choice

A power pole 10 m tall casts a shadow 8 meters long, at the same time that a building nearby casts a shadow 14 m long.  How tall is the building?

• 9 m
• 15.2 m
• 12 m
• 17.5 m

Multiple Choice

A telephone booth that is 8 ft tall casts a shadow that is 4 ft long.  Find the height of a lawn ornament that casts a 2 ft shadow.

• 4 ft
• 2 ft
• 8 ft
• 6ft

Alef Lesson 144

The Big Idea

Multiple Select

Alef - The Big Idea

Which line is the steepest?

• Line A

• Line B

• Line C

Alef Lesson 144

Explore

Multiple Choice

Alef - Explore

Do the two triangles have the same slope or different slopes?

• Same

• Different

Alef Lesson 144

Check My Understanding

Multiple Choice

Identify the slope (AC) of triangle ABC.

• 2

• 1/2

• -2

• -1/2

Multiple Choice

Identify the slope of EF in triangle DEF.

• 1

• -1

• 3

• -3

Alef Lesson 144

Exit Ticket

Open Ended

Explain in words how you would find the length of each side in similar slope triangles on a coordinate plane?