Chapter 10 Go Math Vocabulary

Front

Line of Symmetry

Back

An imaginary line that divides a shape into two congruent parts.

Front

Acute Angle

Back

An angle that has a measure less than a right angle.

Front

Ray

Back

A part of a line, with one endpoint, that is straight and continues in one direction.

Front

Straight Angle

Back

An angle in which two rays point in opposite directions so that they form a line.

Front

Obtuse Angle

Back

An angle that has a measure greater than a right angle.

Front

Line Symmetry

Back

What a shape has if it can be folded about a line so that its two parts match exactly.

Front

Right Angle

Back

An angle that forms a square corner and has a measure of 90 degrees.

Front

Line

Back

A straight path of points that continues without end in both directions.