Geometry-Ch 1 Vocab

What is an acute angle?

• An angle less than 90 degrees

• An angle equal to 90 degrees

• An angle greater than 90 degrees

• An angle equal to 180 degrees

What are adjacent angles?

• Angles that share a common vertex and side

• Angles that are equal

• Angles that add up to 90 degrees

• Angles that are opposite each other

What is an angle bisector?

• A line that divides an angle into two equal parts

• A line that is perpendicular to a side

• A line that connects two angles

• A line that is parallel to a side

What is an axiom?

• A statement accepted as true without proof

• A statement that requires proof

• A statement that is false

• A statement that is a hypothesis

What are collinear points?

• Points that lie on the same line

• Points that form a triangle

• Points that are equidistant

• Points that are in different planes

What are complementary angles?

• Two angles whose measures add up to 90 degrees

• Two angles whose measures add up to 180 degrees

• Two angles that are equal

• Two angles that are adjacent

What are two angles that share a common vertex and side, but have no common interior points called?

• Complementary angles

• Adjacent angles

• Vertical angles

• Supplementary angles

What is an angle that has a measure greater than 0° and less than 90° called?

• Right angle

• Obtuse angle

• Acute angle

• Straight angle

What is a ray that divides an angle into two congruent angles called?

• Perpendicular bisector

• Angle bisector

• Median

• Altitude

What is a set of points consisting of two different rays that have the same endpoint called?

• Line segment

• Angle

• Parallel lines

• Perpendicular lines