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1st semester Geometry Review

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Term
Definition
altitude   A segment in a triangle that goes from a vertex perpendicular to the opposite side of the triangle.  
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perpendicular bisector   A segment that is both perpendicular and bisects a segment.  
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median   A segment in a triangle that goes from a vertex to the midpoint of the opposite side.  
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Perpendicular lines   Lines that form right angles.  
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midpoint   A point that divides a segment into two congruent segments.  
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Segment bisector   A line, line segment, point or ray that divides a segment into two congruent segments.  
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angle bisector   A line, line segment, or ray that divides and angle into two congruent angles.  
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pentagon   A polygon with five sides.  
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Reflexive property   AB ≅ AB  
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Regular polygon   A polygon with all sides congruent and all angles congruent.  
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proof   The process of establishing validity.  
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scalene triangle   A triangle where no sides are congruent.  
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Isosceles triangle   A triangle with exactly two sides congruent.  
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equilateral triangle   A triangle with three congruent sides.  
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equiangular triangle   A triangle with three congruent angles.  
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hypothesis   The “if” part of a conditional statement  
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Conclusion   The “then” part of a conditional statement.  
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octagon   A polygon with eight sides.  
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decagon   A polygon with ten sides.  
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Collinear   Points on the same line.  
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Coplanar   Points on the same plane.  
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Created by: janettaprado
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