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Stone 5th grade math
area, perimeter, volume, acute, obtuse, right scalene, isosceles
Term | Definition |
---|---|
Area of a triangle | base x height divided by 2 |
Volume | length x width x height |
Area of a rectangle | length x width |
Perimeter | The distance around the OUTSIDE of a polygon. ADD the sides |
Circumference | The distance around the OUTSIDE of a circle. It is like the perimeter, but of a CIRCLE. |
Diameter | Widest distance across a circle - going through the center |
Radius | The distance from any point on a circle to the center. Half of the diameter |
Scalene triangle | No equal sides |
Isosceles triangle | 2 equal sides |
Acute angle | less than 90 degrees |
Obtuse angle | More than 90 degrees |
Right angle | 90 degrees |
Straight angle | 180 degrees |