CH.10 vocab. test
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30 terms
Terms | Definitions |
|---|---|
 square | a parallelogram having four right angles and four congruent sides |
| vertex | a common endpoint of two rays forming an angle |
| parallelogram | a quadrilateral with opposite sides congruent and opposite sides parallel |
| straight | an angle that measures exactly 180 degrees |
| right triangle | a triangle with one right angle |
| reflection | a type of formation where a figure is flipped over a line of symmetry |
| rectangle | a parallelogram with four right angles with opposite sides congruent and parallel |
| triangle | a three-sided polygon |
| scalene triangle | a triangle with no congruent sides |
| quadrilateral | a four-sided polygon |
| obtuse angle | an angle between 90 and 180 degrees |
| pentagon | 5-sided ploygon |
| angle | two rays with a common endpoint |
| isosceles triangle | a triangle with two equal sides |
| octagon | an eight-sided polygon |
| line of symmetry | a line that divides a figure into two halves that are reflections of each other |
| nonagon | a nine-sided polygon |
| obtuse triangle | a triangle with 1 obtuse angle |
| tessallation | a pattern of shapes that completely cover a plane without overlaps or gaps |
| decagon | 10 sided polygon |
| acute triangle | a triangle with 3 acute angles |
| regular polygon | a polygon with all sides and all angles equal |
| polygon | A closed plane figure formed by three or more line segments that intersect only at their endpoints. |
| trapezoid | A quadrilateral with one pair of parallel sides |
| equilaterial triangle | all three sides are equal |
| right angle | an angle that measures 90 degrees |
| heptagon | a seven-sided polygon |
| rhombus | a parallelogram with four equal sides |
| hexagon | a six-sided polygon |
| actue angle | an angle that measures greater than 0 and less than 90 degrees |
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