Math Definitions 4 angles and shapes
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Created by:
zoed18 on March 26, 2012
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Classes:
Falcon 7, FWCD 6th grade, All FWCD 7th grade, 7th grade FWCD, FWCD Special Group (MSC)
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20 terms
Terms | Definitions |
|---|---|
 Acute Angle | angle that measures less than 90 degrees and greater than 0 degrees |
| Obtuse angle | angle that measures more than 90 degrees but less than 180 degrees |
| right angle | angle that measures 90 degrees |
| straight angle | angle that measures 180 degrees |
| complementary angles | two angles whose sum is 90 degrees |
| supplementary angles | two angles whose sum is 180 degrees |
| parallel lines | lines in the same plane that never intersect |
| perpendicular lines | lines that intersect to form right angles |
| acute triangle | a triangle with 3 acute angles |
| obtuse triangle | a triangle with one obtuse angle |
| right triangle | a triangle with one 90 degree angle |
| equilateral triangle | a triangle that has three equal sides |
| isosceles triangle | a triangle that has 2 equal sides |
| scalene triangle | a triangle with no equal sides |
| quadrilateral | a closed figure with four sides and four angles |
| parallelogram | a quadrilateral with opposite sides parallel and congruent |
| rectangle | a parallelogram with 4 right angles |
| square | a parallelogram with 4 right angles and four equal sides |
| trapezoid | a quadrilateral with ONLY one pair of parallel sides |
| rhombus | a parallelogram with 4 equal sides |
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