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Geometry Unit 1 Vocabulary

Across
Two angles whose sum is 180 degrees.
When two lines cross or touch.
When a ray intersects a line, creating two angles.
A statement which has been proven true.
It has one dimension with an infinite set of points with two arrowheads that extend without an end.
Angles that have the same measure or segments that have the same length.
Angles that share a ray.
Points on the same line.
It has two dimensions extending without an end.
A point that divides a segment into two congruent segments.
To divide in half.
A statement taken to be true without proof.
Two angles whose sum is 90 degrees.
Coplanar lines that do not intersect
A ray that divides an angle into two congruent angles.
Points on a line that determines the length of a segment.
Down
Two rays that share a common point.
It has no dimension. It is located on a plane and represented by a dot.
An angle that measures 180 degrees. It forms a line.
An angle whose measure is more than 90 degrees, but less than 180 degrees.
Angles that are opposite each other when two lines intersect. They are congruent.
Part of a line that has one endpoint and extends without end in one direction.
Part of a line that consists of two end points and all of the points between them.
Lines on the same plane
An angle that measures 90 degrees.
The square root of the sum of the squares of the difference of the x-coordinates and the y-coordinates.
Two lines that intersect to form a right angle.
The point of an angle where the two rays intersect.
An angle that measures less than 90 degrees.