The size of a suface of a shape.

The distance around a shape.

IN A RIGHT TRIANGLE, A LEG IS EITHER OF THE TWO SIDES THAT FORM THE RIGHT ANGLE.

A RATIONAL NUMBER IS A REAL NUMBER THAT CAN BE WRITTEN AS A SIMPLE FRACTION (I.E. AS A RATIO).

A REAL NUMBER THAT CANNOT BE WRITTEN AS A SIMPLE FRACTION.

THE LONG SIDE OF A RIGHT TRIANGLE.

MULTIPLYING A NUMBER BY ITSELF.

A VALUE THAT CAN BE MULTIPLIED BY ITSELF TO GIVE THE ORIGINAL NUMBER.

A2+B2=C2

A TRIANGLE WITH 2 EQUAL SIDES AND A 90 DEGREE ANGLE.

INTERNAL ANGLE THAT EQUALS 90 DEGREES.

MATHEMATICAL INDUCTION IS A METHOD GENERALLY USED TO PROVE OR ESTABLISH THAT A GIVEN STATEMENT IS TRUE FOR ALL NATURAL NUMBERS.