Geometry Ch. 5 & 6 ACT

Front

What is a perpendicular bisector?

Back

A line that divides a segment into two equal parts at a 90-degree angle.

Front

If segment QS is the perpendicular bisector of segment PR, what can be said about segments PQ and SR?

Back

Segments PQ and SR are equal in length.

Front

What is the relationship between the angles in a triangle and the sum of their measures?

Back

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

Front

What does it mean for two figures to be similar?

Back

Two figures are similar if they have the same shape but not necessarily the same size, and their corresponding angles are equal.

Front

What is the Midsegment Theorem?

Back

The segment connecting the midpoints of two sides of a triangle is parallel to the third side and is half as long.

Front

How do you find the length of a segment using the Pythagorean theorem?

Back

For a right triangle, the length of the hypotenuse can be found using the formula a² + b² = c², where c is the hypotenuse.

Front

What is the formula for the area of a triangle?

Back

Area = 1/2 * base * height.

Front

What is the definition of a triangle's median?

Back

A median of a triangle is a line segment joining a vertex to the midpoint of the opposite side.

Front

How do you determine the length of a midsegment in a triangle?

Back

The length of a midsegment is half the length of the third side.

Front

What is the relationship between corresponding sides of similar triangles?

Back

The ratios of the lengths of corresponding sides of similar triangles are equal.