Set: Math flash cards

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All 25 Terms

Term Definition
line a set of points that extends without end in opposite directions
Line segment a part of a line with two endpoints
Ray a part of a line that has one endpoint and extends forever
vertex the common endpoint formed by two rays
parallel lines lines that are in the same plane and never intersect
perpendicular lines lines that intersect to form right angles
acute angle an angle that measures less than 90º
obtuse angle an angle whose measure is greater than90º buy less than 180º
straight angle an angle that measures exactly 180º
adjacent angles angles that are side by side and have a common endpoint called the vertex
vertical angles a pair of opposite congruent angles formed by intersecting lines
supplementary angles two angles whose measures add to 180º
complementary angles two angles whose measures add to 90º
equilateral triangl a triangle with three congruent sides
scalene triangle a triangle with no congruent sides
isosceles triangle a triangle with at least two congruent sides
right triangle a triangle with a right angle
acute triangle a triangle with all angles less than 90º
obtuse triangle a triangle containing one obtuse angle
parallelogram a quadrilateral with two pairs of parallel sides
rhombus a parallelogram with congruent sides
trapezoid a quadrilateral with exactly one pair of parallel sides
square a rectangle with four congruent sides
rectangle a parallelogram with four right angles
regular polygon a polygon with congruent sides and angles

Set Information

Terms 25
Creator scaller
Created May 29, 2008
Groups None
Subject mathematics
Access Anyone
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Most Missed Words

  1. obtuse angle → an angle whose measure is greater than90º buy less than 180º - 2 misses
  2. acute angle → an angle that measures less than 90º - 2 misses
  3. adjacent angles → angles that are side by side and have a common endpoint called the vertex - 1 miss
  4. parallel lines → lines that are in the same plane and never intersect - 1 miss
  5. regular polygon → a polygon with congruent sides and angles - 1 miss
  6. equilateral triangl → a triangle with three congruent sides - 1 miss
  7. trapezoid → a quadrilateral with exactly one pair of parallel sides - 1 miss