Q3 Benchmark Review 2025

Front

What is a dilation in geometry?

Back

A dilation is a transformation that alters the size of a figure but not its shape, using a scale factor and a center point.

Front

What is the scale factor in a dilation?

Back

The scale factor is a number that scales, or multiplies, the dimensions of a figure during a dilation.

Front

How do you find the new coordinates after a dilation?

Back

To find the new coordinates after a dilation, multiply the original coordinates by the scale factor and then add the center point coordinates.

Front

What is the formula for the area of a triangle?

Back

Area = 1/2 * base * height.

Front

How do you round a number to the nearest tenth?

Back

Look at the hundredths place; if it's 5 or more, round up the tenths place by one, otherwise keep the tenths place the same.

Front

What is the perimeter of a shape?

Back

The perimeter is the total distance around the outside of a shape, calculated by adding the lengths of all its sides.

Front

How do you find the missing angle in a triangle?

Back

Use the fact that the sum of the angles in a triangle is always 180 degrees. Subtract the sum of the known angles from 180.

Front

What is the relationship between the sides of a right triangle?

Back

In a right triangle, the square of the length of the hypotenuse is equal to the sum of the squares of the lengths of the other two sides (Pythagorean theorem).

Front

What is the formula for the circumference of a circle?

Back

Circumference = 2 * π * radius.

Front

What is the difference between area and perimeter?

Back

Area measures the space inside a shape, while perimeter measures the distance around it.