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Geometry
Vocabulary
| Term | Definition |
|---|---|
| A triangle with three sides of equal length, and three angles of equal measures | equilateral triangle |
| A triangle in which two sides are of equal length, and two angles have the same measure | isosceles triangle |
| A triangle in which all three sides have different lengths, and all three angles have different measures | scalene triangle |
| A triangle with one angle measuring 90 degrees | right triangle |
| congruent | having exactly the same size and shape |
| polygon | a closed figure, made up of sides that do not overlap |
| regular polygon | a polygon in which all sides are the same length, and all angles have the same measure |
| parallel | lines that are always the same distance apart, and never intersect |
| perpendicular | lines that intersect to form four right angles |
| quadrilateral | a four sided polygon |
| pentagon | a five sided polygon |
| hexagon | a six sided polygon |
| octagon | an eight sided polygon |
| acute angle | an angle measuring less than 90 degrees |
| obtuse angle | an angle measuring greater than 90 degrees, but less than 180 degrees |
| right angle | an angle measuring exactly 90 degrees |
| reflex angle | an angle measuring more than 180 degrees |
| parallelogram | a quadrilateral with two pairs of parallel sides |
| trapezoid | a quadrilateral with one pair of parallel sides |
| vertex | point where two lines meet to form an angle |
Created by:
MrArchung
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