Undefined Terms
Basic Definitions
Segments
Other
100
An undefined term in Geometry. It names a location and has no size.
What is a point?
100
A point at an end of a segment or the starting point of a ray
What is an Endpoint?
100
Part of a line that is bounded by two end points and contains every point onthe line between its endpoints.
What is a segment?
100
Angles that have the same measure
What are congruent angles?
200
An undefined term in geometry that is a straight path that has no thickness and extends forever.
What is a line?
200

True or False: Two figures are congruent just as long as all 3 corresponding angle pairs are congruent.

What is False?

200
Two rays that have a common endpoint and form a line
What are opposite rays?
200

What is used to show that two segments are congruent?

What is a stroke or hashmark?

300
An undefined term in Geometry, it is a flat surface that has no thickness and extends forever.
What is a plane?
300
Points that lie on the same line.
What is a Collinear?
300

Points A, B, and C are collinear and in that order. If AC is 28, and BC is 10, what is the length of AB?

What is 18?

300

What is used to show that two angles are congruent?

What is an arc?

400
A part of a line that starts at an endopint and extends forever in one direction.
What is a ray?
400

Geometry comes from the ancient Greek word "ge" meaning ________ and "metron" meaning ________ .

What is earth and measure?

400
Two segments that have the same length.
What are congruent segments?
400

Points, A, B, C, and D are collinear, and in that order. What is AC - BC?


What is AB?

500

Of the undefined terms, what would the surface of a desk represent?

What is a plane?

500

Points that lie on the same plane.

What is coplanar?

500
Anumber used to identify the location of a point on a number line, coordinate plane or space.
What is a coordinate?
500

Given that AB = 8 and BC = 12, is AC necessarily 20? Explain your answer!

What is NO, because the given segments are not necessarily collinear.

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