Final 2023 Review

Front

What is a line of symmetry?

Back

A line of symmetry is a line that divides a shape into two identical parts that are mirror images of each other.

Front

How many lines of symmetry does a triangle have?

Back

A triangle can have 0, 1, or 3 lines of symmetry depending on its type (scalene, isosceles, or equilateral).

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 two corresponding sides of two similar figures.

Front

If the scale factor is less than one, what happens to the figure?

Back

The figure will be a reduction.

Front

What does it mean for two angles to be congruent?

Back

Two angles are congruent if they have the same measure.

Front

What is the sum of the interior angles of a triangle?

Back

The sum of the interior angles of a triangle is always 180 degrees.

Front

What is the relationship between corresponding angles in similar figures?

Back

Corresponding angles in similar figures are equal.

Front

What is the formula for finding the area of a triangle?

Back

Front

What is an enlargement in geometry?

Back

An enlargement is a transformation that increases the size of a figure by a scale factor greater than one.

Front

What is the difference between a reduction and an enlargement?

Back

A reduction decreases the size of a figure (scale factor less than one), while an enlargement increases the size (scale factor greater than one).