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Unit 5 Vocabulary Geometry

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
Acute Angle   An angle with a measure greater than 0 degrees and less that 90 degrees.  
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Acute Triangle   A triangle having three acute angles.  
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Adjacent Angles   Angles that have the same vertex, share a common side, and do not overlap.  
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Complementary Angles   Two angles who's sum is 90 degrees.  
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Congruent Angles   Angles that have the same measure.  
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Equilateral Triangle   A triangle having three congruent sides.  
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Isosceles Triangle   A triangle having at least two congruent sides.  
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Obtuse Angle   Any angle that measures greater than 90 degrees but less than 180 degrees.  
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Obtuse Triangle   A triangle having one obtuse angle  
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Right Angle   An angle that measures exactly 90 degrees.  
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Right Triangle   A triangle having one right angle.  
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Scalene Triangle   A triangle having no congruent sides.  
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Straight Angle   An angle that measures exactly 180 degrees.  
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Supplementary Angles   Two angles who's sum measures 180 degrees.  
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Triangle   A figure with three sides and three angles.  
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Vertical Angles   Opposite angles formed by the intersection of two lines. These angles are congruent.  
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What are two ways to classify a triangle?   By its sides and by its 3rd angle.  
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