R

__**R is for Rational Numbers**__. __** A Rational Number is a fraction, decimal, or percent. **__



Regular Ploygon- A polygon having all sides and angles congruent.



** Ratio- Comparing two numbers by division. Ex.- 2:4 5:3 9:4 A ratio can also be a fraction like 1/2 or 22/7. **
​[|On this site, scroll down until you get to the ratio part and it has good examples!]

Rectangular Prism - This is a prism with a rectangular base and.

This is an example of a ray: **
 * Ray- A vertex with a continuous line

Right angle A right angle is an angle that is equal to 90 degrees! This is an example of a right angle.

R is for rotation!!!!!!!!!!!!!!! A rotation is a translation to the left or right around a fixed point. R is for radius. it is half the diameter of a circle.