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# Tools of Geometry

### Unit 2

What is an acute angle? An acute angle is less than 90 degrees.
What is Congruent Angles? Angles that have the same degree.
What is Coplanar? Coplanar is when points and lines are in the same plane.
What is midpoint? A point that divides a segment into to two congruent segemnts. It bisects the segment.
What are perpendicular lines? Lines that intersect to form right angles.
What is a ray? A ray is a part of a line that consists of an intial point and all points on the line that lie on one side of the intial point.
What is a space? A space is the boundless 3 dimesional set of all points.
What is an angle? An angle is made of two rays connected at their end points, called the vertex.
What are congruent segments? Congruent segments are segments that have the same length.
What is an counterexample? An example that's enough to disapprove a conjecture.
What is an obtuse Angle? An angle greater than 90 degrees.
What is an opposite ray? A ray that starts at the same point and then goes in opposite directions.
What are parallel lines? Lines that are coplanar but do not intersect.
What is a plane? A plane is flat surface that has no thickness. It extends without end in all directions.
What is a point? A point has no length, no width, and/or no thickness, but has a position.
What is a postulate? A statement accepted to be true without proof.
What is a ray? A part of a line that consists of an initial point and all points on the line that lies on side of the intitial point.
What is a right angle? A angle thats exactly 90 degrees.
What is a segment? A portion of a line between two points, called endpoints.
What is a skew line? Lines that are colplanar lines, therefore they are not parallel and do not intersect.
WHat is a space? The boundless three-dimensional set of all points.
Created by: keedy_12