Basics of Geometry Vocabulary

What is an Adjacent Angle?

• Two angles that share a common vertex and side, but have no common interior points

• Points that lie in the same plane

• The absolute value of the difference of two coordinates on a line

• Points that lie on the same line

What are Collinear Points?

• Points that lie in the same plane

• The region that contains all the points between the sides of an angle

• A flat surface made up of points that has two dimensions and extends without end, and is represented by a shape that looks like a floor or a wall

• Points that lie on the same line

What are Complementary Angles?

• Two adjacent angles whose non common sides are opposite rays

• A geometric drawing that ues a limited set of tools, usually a compass and a straightedge

• Two angles whose measures have a sum of 90

• Two angles whose measures have a sum of 180

What is another name for a Linear Pair?

• Acute Angle

• Straight Angle

• Obtuse Angle

• Right Angle

What is a Ray?

• consists of the endpoint and all points on that lie on the same side

• Intersects the segment at its midpoint

• A location in space that is represented by a dot and has no dimension

• An angle that equals 90

Which is true about Bisectors?

• A ray that divides an angle into two angles that are congruent

• A point, ray, line, line segment, or plane that intersects the segment at its midpoint

• Two adjacent angles whose noncommon sides are opposite rays

• Two angles whose sides form two pairs of opposite rays

What is the meaning of the word Geometry?

• Geo means EARTH

• Metry means PROCESS AND MEASUREMENT

• Geo means WATER

• Metry means HYPOTHESIS

Acute Angle

• An angle that has a measure greater than 0° and less than 90°.

• An angle that has a measure greater than 90° and less than 180°.

• An angle that has a measure of 180°.

• An angle that has a measure of 90°.

Right Angle

• An angle that has a measure greater than 0° and less than 90°.

• An angle that has a measure greater than 90° and less than 180°.

• An angle that has a measure of 180°.

• An angle that has a measure of 90°.

Obtuse Angle

• An angle that has a measure greater than 0° and less than 90°.

•  An angle that has a measure greater than 90° and less than 180°.

• An angle that has a measure of 180°.

• An angle that has a measure of 90°.