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Geometry 2
Topic 11 grade 3
Term | Definition |
---|---|
quadrilateral | a polygon with 4 sides |
pentagon | a polygon with 5 sides |
hexagon | a polygon with 6 sides |
octagon | a polygon with 8 sides |
decagon | a polygon with 10 sides |
equilateral triangle | a triangle with all sides the same length |
isosceles triangle | a triangle with 2 sides the same length; hint: SOS = same, odd man out, same |
scalene triangle | a triangle with no sides the same length |
right triangle | a triangle with 1 right angle |
acute triangle | a triangle with 3 acute angles |
obtuse triangle | a triangle with 1 obtuse angle |
trapezoid | a quadrilateral with only 1 pair of opposite sides that are parallel |
parallelogram | a quadrilateral with opposite sides that are parallel |
rectangle | a parallelogram with 4 right angles and opposite sides are the same length |
rhombus | a quadrilateral where opposite sides are parallel and all the sides are the same length |
square | a quadrilateral with 4 right angles and all the sides are the same length |