Hamilton Geometry Practice Test (Units 3 & 4)

Front

What is the Triangle Inequality Theorem?

Back

The Triangle Inequality Theorem states that for any triangle, the sum of the lengths of any two sides must be greater than the length of the third side.

Front

Which lengths cannot form a triangle?

Back

Lengths that do not satisfy the Triangle Inequality Theorem cannot form a triangle. For example, lengths 3 cm, 10 cm, and 15 cm cannot form a triangle.

Front

What is the measure of an angle in a triangle?

Back

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

Front

What is the formula for reflecting a point across the x-axis?

Back

To reflect a point (x, y) across the x-axis, the new coordinates will be (x, -y).

Front

What are the coordinates after a 90° clockwise rotation of point (x, y)?

Back

After a 90° clockwise rotation, the coordinates (x, y) become (y, -x).

Front

What is the measure of an angle in a right triangle?

Back

In a right triangle, one angle measures 90 degrees, and the sum of the other two angles is 90 degrees.

Front

How do you find the measure of an angle using the properties of triangles?

Back

You can find the measure of an angle by using the fact that the sum of the angles in a triangle is 180 degrees.

Front

What is the relationship between complementary angles?

Back

Complementary angles are two angles whose measures add up to 90 degrees.

Front

What is the relationship between supplementary angles?

Back

Supplementary angles are two angles whose measures add up to 180 degrees.

Front

What is the formula for finding the distance between two points (x1, y1) and (x2, y2)?

Back