Figures Review

Mrs. Ashley used similar triangles to make a design.  Which statement about the triangles in the design must be true?

• They are the same size and shape.

• They are the same size but different shapes.

• They have corresponding angles that are congruent.

• They have corresponding sides that are congruent.

Enlargement or reduction?  Find the scale factor!

• It's a reduction; the scale factor is 2.

• It's an enlargement; the scale factor is 2.

• It's an enlargement; the scale factor is 1/2.

• It's a reduction; the scale factor is 1/2.

The __________ is the ratio of a length of the new figure to the corresponding length on the original figure.

• reduction

• enlargement

• scale factor

• center of dilation

What scale factor was used to produce the image?

• 2

• -2

• ¹/₂

• 1

Did the image enlarge, reduce or none of the above?

• Enlarge

• Reduce

• None of the above

55 yd³121 yd³22 yd³330 yd³

• 55 yd³

• 121 yd³

• 22 yd³

• 330 yd³

Find the surface area of this figure.

• 148 cm²

• 120 cm²

What is the volume of the following triangular prism?

• 45 cubic in

• 36 cubic in

• 108 cubic in

• 54 cubic in

Find the total surface area of the prism.

• 161 square feet

• 1,700 square feet

• 75 square feet

• 186 square feet

^{_{Find the Surface Area}}

• 15m²

• 16m²

• 18m²

• 20m²