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first semester geometry vocabulary

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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Question
Answer
the product of multliplying a number by itself   square  
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a number that was squared   square root  
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a number with a square root symbol   radical  
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a triangle with one right angle   right triangle  
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each of the sides that form the right angle of a right triangle   leg  
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the side opposite the right angle of a right triangle   hypotenuse  
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formula for finding the a missing side of a right triangle   a formula for right triangles pythagorean theorem  
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a triangle with 3 acute angles   an acute triangle  
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a triangle with one obtuse angle   an obtuse triangle  
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a triangle with all angles equal   equiangular triangle  
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the angle formed by extending one side of a triangle   exterior angle  
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an interior angle of a triangle not adjacent to the given exterior angle   remote interior angle  
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a triangle with no sides congruent   scalene triangle  
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a triangle with two sides congruent   isosceles triangle  
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a triangle with all sides congruent   equilateral triangle  
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lines that lie in the same plane and do not intersect   parallel lines  
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angles on the same side of the transversal; one is interior, one is exterior   corresponding angles  
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a line that intersects two different lines at two different points   transversal  
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interior angles that are on the same side of the transversal   same-side interior angles  
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two lines that intersect to form a right angle   perpendicular lines  
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interior angle that are on opposite sides of the transversal   alternate interior angles  
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a geometric figure formed by two rays with a common endpoint   angle  
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a tool used to measure angles   protractor  
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an angle less than 90 degrees   acute angle  
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an angle equal to 90 degrees   right angle  
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an angle that is greater than 90 degrees   obtuse angle  
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an angle that is equal to 180 degrees and forms a straight line   straight angle  
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two angles that have a common vertex and a common ray   adjacent angles  
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two angles whose measures have a sum of 90 degrees   complimentary angles  
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two angles whose measure have a sum of 180 degrees   supplementary angles  
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angles that have the same measure   congruent angles  
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angles formed by intersecting lines   vertical angles  
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a ray that divides and angle into 2 congruent angles   angle bisector  
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a statement that is accepted without proof   postulate  
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a location space   point  
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a geometric figure made up of many points and extends endlessly in both directions   line  
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part of a line, it has two endpoints   line segment  
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part of a line, it has only one endpoint   ray  
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a flat surface that extends endlessly in all directions   plane  
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line segments that have the same length   congruent line segments  
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the point that divides a line segment into 2 congruent parts   midpoint  
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a lines that intersects a line segment at its midpoint   bisector  
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points on the same line   collinear points  
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a statement that can be proved   theorem  
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