Basic math glossaryR
Basic math glossaryR define words beginning with the letter R
Radius: The distance from the center of a circle to the edge of a circle.
Rate: Rate means percent.
Rate of commission: A percent used to calculate the commission.
Rate of interest: A percent charged when borrowing money.
Ratio: The comparison of two numbers using division
Ray: A line with a beginning point but no endpoint.
Real distance: As opposed to distance on a map, it is the actual distance between two locations.
Rectangle: A parallelogram with four right angles.
Rectangular prism: A prism that has rectangular faces
Reflex angle: An angle whose measure is bigger than 180 degrees, but less than 360 degrees.
Remainder: The amount left over when a number does not divide another number evenly.
Rectangle: A parallelogram with four right angles.
Repeating decimal: A decimal where the same series of digits repeat
Rhombus: A parallelogram with four equal sides and opposite angles that are equal.
Right angle: An angle whose measure is 90 degrees.
Right triangle: A triangle with one right angle.
Rhombus: A parallelogram with four equal sides and opposite angles that are equal.
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