Basic Definitions
Congruency
Anglish
Angle Pairs
Lines
100

A straight arrangement of points that extends in two opposite directions without end and has no thickness.

What is a line?

100
This is a point that divides the segment into two congruent segments.
What is a midpoint?
100
This angle measures less than 90 degrees.
What is an acute angle?
100
These are two coplanar angles with a common side, a common vertex, and no common interior points.
What is adjacent angles?
100
These are two lines that intersect to form right angles.
What are perpendicular lines?
200

The set of all points on a flat surface that extends without end in all directions and has no thickness.

What is a plane?

200
This is a point, line, ray, or other segment that intersects a segment at its midpoint.
What is a segment bisector?
200
This angle measures to 90 degrees.
What is a right angle?
200
These are two angles whose sides are opposite rays.
What are vertical angles?
200
This is a line, segment, or ray that is perpendicular to the segmnet at its midpoint.
What is a perpendicular bisector?
300

A straight arrangement of points  that consists of two endpoints and all points between them.

What is a segment?

300
This is formed by two rays with the same endpoint.
What is an angle?
300
This angle measures more than 90 degrees but less than 180 degrees.
What is an obtuse angle?
300
These are two angles whose measures have a sum of 90 degrees.
What are complementary angles?
300
The ratio of the vertical change to the horizontal change between any two points.
What is the slope?
400

A street arrangement of points that consists of one endpiot and all the points of the line extending on one side of the endpoint.

What is a ray?

400
This is the endpoint of the angle.
What is the vertex?
400
This angle measures 180 degrees.
What is a straight angle?
400
These are two angles whose sum is 180 degrees.
What are supplementary angles?
400
This form of an equation of a nonvertical line is y=mx+b.
What is slope intercept form?
500

These are two rays that share the same endpoint and form a line.

What is opposite rays?

500
This is a ray that divides an angle into two congruent angles.
What is an angle bisector?
500
Angles with the same measure are...
What is congruent?
500
These are a pair of adjacent angles whose noncommon sides are opposite rays.
What are a linear pair?
500
The form of an equation of a nonvertical line is y-y1=m(x-x1).
What is the point slope form ?
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