ACT Geometry Practice

Front

What is a trapezoid?

Back

A trapezoid is a four-sided figure (quadrilateral) with at least one pair of parallel sides.

Front

How do you find the measure of an angle in a trapezoid?

Back

To find the measure of an angle in a trapezoid, you can use the properties of parallel lines and the angles formed by transversals.

Front

What is the sine function?

Back

The sine function, denoted as sin(θ), is a trigonometric function that relates the angle θ to the ratio of the length of the opposite side to the hypotenuse in a right triangle.

Front

What is the tangent function?

Back

The tangent function, denoted as tan(θ), is a trigonometric function that relates the angle θ to the ratio of the length of the opposite side to the length of the adjacent side in a right triangle.

Front

What is the relationship between the sides of a right triangle and the sine and cosine functions?

Back

In a right triangle, sin(θ) = opposite/hypotenuse and cos(θ) = adjacent/hypotenuse.

Front

What is the perimeter of a square?

Back

The perimeter of a square is calculated as P = 4s, where s is the length of one side.

Front

How do you find the perimeter of a quadrilateral formed by the midpoints of a square?

Back

The perimeter of the quadrilateral formed by the midpoints of a square is equal to the length of the sides of the square multiplied by √2.

Front

What is the formula for the circumference of a circle?

Back

The circumference C of a circle is given by the formula C = 2πr, where r is the radius.

Front

How does the ratio of the radii of two circles affect the ratio of their circumferences?

Back

The ratio of the circumferences of two circles is the same as the ratio of their radii.

Front

What are parallel lines?

Back

Parallel lines are lines in a plane that never meet; they are always the same distance apart.