IM U3 L1-3- Similarity

Front

What is similarity in geometry?

Back

Similarity in geometry refers to figures that have the same shape but may differ in size. This means corresponding angles are equal and corresponding sides are proportional.

Front

What is a scale factor?

Back

A scale factor is a number that scales, or multiplies, some quantity. In geometry, it is the ratio of the lengths of corresponding sides of similar figures.

Front

How do you calculate the scale factor between two similar figures?

Back

Front

What happens to the dimensions of a figure when the scale factor is greater than 1?

Back

When the scale factor is greater than 1, the figure is enlarged.

Front

What happens to the dimensions of a figure when the scale factor is less than 1?

Back

When the scale factor is less than 1, the figure is reduced.

Front

If two triangles are similar, what can be said about their corresponding angles?

Back

If two triangles are similar, their corresponding angles are equal.

Front

If triangle ABC is similar to triangle DEF, what can be said about the sides?

Back

The sides of triangle ABC are proportional to the sides of triangle DEF.

Front

What is the relationship between the area of two similar figures and their scale factor?

Back

The area of two similar figures is proportional to the square of the scale factor.

Front

What is the formula for finding the area of a similar figure given the scale factor?

Back

Front

What is a dilation in geometry?

Back

A dilation is a transformation that produces an image that is the same shape as the original, but is a different size.