Angles
Undefined Terms
Defined Terms
Ways To Describe Lines
Formulas
100
Smaller than a 90 degree angle.
What is an Acute Angle?
100
A specific location.
What is a Point?
100
A portion of a line consisting of two points.
What is a Line Segment?
100
Objects are coplanar if they all lie in the same plane.
What is Coplanar?
100
Is a fundamental relation in Euclidean geometry among the three sides of a right triangle.
What is Pythagorean?
200
An angle that is exactly 90 degrees
What is a Right Angle?
200
A connected straight path that continues in both directions forever.
What is a Line?
200
Starts at a point and continues in one direction forever.
What is a Ray?
200
Two lines directly across from each other.
What is Parallel?
200
(x1,y1) and (x2,y2)
What is Distance?
300
Larger than 90 degrees.
What is an Obtuse Angle?
300
A flat surface that extends forever in both directions.
What is a Plane?
300
Is the relationship between two lines which meet at a right angle (90 degrees).
What is Perpendicular?
400
An angle that is exactly 180 degrees.
What is a Straight Angle?
400
Lying in the same straight line.
What is Collinear?
500
Is the middle point of a line segment.
What is Midpoint?
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