Similar triangles

The triangles are similar, solve for the question mark.

• 8
• 12.5
• 18
• 24

Find the height of the tree.

• 8 ft
• 12 ft
• 13 ft
• 15 ft

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

Find side length X.

• 30
• 25
• 15
• 40

Which triangles are similar to triangle A?

• B
• C
• Both
• None

Are the triangles similar?

• Yes
• No

Which is NOT true about similar triangles.

• The angles in the triangles are congruent to each other.
• The sides are proportional to each other.
• The angles in each triangle add up to 180^o.
• The triangles must have at least one side that is the same length.

What does it mean for two shapes to be similar?

• Same shape, but different size.
• Same size and same shape.
• Their angles add up to 180^o.
• They are congruent.

Use the information in the diagram to determine the height of the tree.

• 80 feet
• 320 feet
• 40 feet
• 160 feet

Which triangles are similar to triangle A?

• B
• C
• Both
• None