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### 24 Cards in this Set

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 What is the defintion of an angle? If two rays have common endpoint, then they form an angle. What is the definiton of an acute angle? If an angle is greater than 0 degrees and less than 90 degrees, then ity is an acute angle. What is the definition of a right angle? If an angle is 90 degrees, then it is a right angle. What is the defintion of an obtuse angle? If an angle is more than 90 degrees and less than 180 degrees, then it is an obtuse angle. What is the definition of a straight angle? If an angle is 180 degrees, then it is a straight angle. What is the definition of congruent angles? If two angles have the same measure then they are congruent. What is the definition of congruent segments? If two segments have the same measure, then they are congruent segments. What is the definition of collinear? If two points lie on the same line, then they are congruent. What is the definition of noncollinear? If two points do not lie on the same line, then they are noncollinear. What is the definition of a theorem? If a statement is a mathematical statement that can be proved, then it is a theorem. What ids the definition of bisects? If a point(or segment,ray,or line) divides a segment into two congruent segments, then it bisects the segment. What is the definition of trisects? If two points(or segments, rays, or lines) divides a segment into three congruent segments, then it trisects the segment. What is the definition of a bisector? If a ray divides a angle into two conguent angles, then it is called the bisector of the angle. What is the definition of a midpoint? If a point(or segment, ray, or line) divides a segment into two congruent segments, thenit is called the midpoint. What is the definition of trisects? If two rays divide an angle into three congruent angles, then it trisects the angle. What is the definition of trisectors? If two rays divide an angle into three congruent angles, then it is called the trisector of the angle. What is the definition of a postulate? If an assumption is an unproved assumption, then it is a postulate. What is the definition of a definition? If a statement states the meaning of a term or idea, then it is a definition. What is the definition of perpendicular? If two lines, rays, or segments intersect at right angles, then they are perpendicular. What is the defintion of complementary angles? If two angles sum is 90 degrees, then they are complementary angles. What is the defintion of a complement? If two angles sum is 90 degrees, then they complement each other. What is the defintion of supplementary angles? If two angles sum is 180 degrees, then they are supplementary angles. What is the defintion of a supplement? If two angles' sum is 180 degrees, then they supplement each other. What is the defintion of a supplement? If two angles' sum is 180 degrees, then they supplement each other.