Geometry Similarity & Proportionality

Question 1

What does it mean for two shapes to be similar?

Accepted Answer

Same shape, sides proportional

Answer

Same size, different shape.

Answer

Same shape, same size.

Answer

Completely identical.

Question 2

What is a proportion?

Accepted Answer

An equation stating two ratios are equal

Answer

A difference between numbers.

Answer

A multiplication of two numbers.

Answer

A sum of two ratios.

Question 3

What does the scale factor describe?

Accepted Answer

The ratio of corresponding sides

Answer

The difference between angles.

Answer

The total area of shapes.

Answer

The number of vertices.

Question 4

What is true about corresponding angles in similar triangles?

Accepted Answer

They are equal

Answer

They are proportional.

Answer

They are doubled.

Answer

They are halved.

Question 5

If two polygons are similar, how are their perimeters related?

Accepted Answer

The ratio of perimeters equals the scale factor

Answer

The perimeters are equal.

Answer

The perimeters are unrelated.

Answer

The perimeters are double the scale factor.

Question 6

Which statement is true about proportional sides in similar figures?

Accepted Answer

They are proportional

Answer

They are equal.

Answer

They are independent.

Answer

They are doubled.

Question 7

How can you find a missing side in similar triangles?

Accepted Answer

Set up a proportion using the scale factor

Answer

Add all sides together.

Answer

Multiply angles together.

Answer

Double the smaller side.

Question 8

What happens to the area ratio of two similar figures?

Accepted Answer

It equals the square of the scale factor

Answer

It equals the scale factor.

Answer

It equals the cube of the scale factor.

Answer

It equals half the scale factor.

Question 9

What is an indirect measurement method?

Accepted Answer

Using similar triangles or proportions

Answer

Using a ruler directly.

Answer

Guessing values.

Answer

Using approximate calculations.