| A | B |
|---|
| Scalene triangle | has sides of unequal length |
| Positive numbers | numbers greater than zero |
| Right triangle | has one 90-degree angle |
| Opposite angles | are formed by two straight lines that cross |
| Square | has two pairs of equal sides and equal angles |
| Adjacent angles | are angles that have the same vertex and one side in common |
| Sum | the total of an addition problem |
| Negative numbers | Numbers less than zero |
| Metric ruler | an instrument that measures metric lengths |
| Perimeter | the distance around the outside of any closed shape |
| Whole numbers | Complete units without fractions or decimals |
| Percent | part of one hundred |
| Isosceles triangle | has two equal sides and two equal angles |
| Difference | result you get in subtraction problem |
| Equilateral triangle | has three equal sides and three equal angles |
| Mixed number | combination of a whole number with a fraction or decimal |
| Rectangle | has two pairs of equal sides that are parallel to each other |
| Standard ruler | an instrument that measures English measurements |
| Equivalent fractions | fractions with different numerators and denominators but equal values |
| English ruler | an instrument that measures English measurements |
| Digit | numerical symbols from 0 to 9 |
| Denominator | the part of the fraction below the line |
| Diameter | a straight line from one side of a circle passing through its center to other side |
| Circle | a closed curve around a central point |
| Numerator | the part of the fraction above the line |
| Radius | equal to half the diameter of a circle |
| Degree | unit of measure for angles |
| Angle | made shape made by two straight lines coming |
| Circumference | distance around a curved line that forms a circle |
| Pi | equals 3.14 or 22/7 |
| Vertex | point at which two straight lines coming |
| Bisect | divide it into two equal parts |
| Area | used to measure sq ft, sq in, and sq cm |
| Cubic | used to measure volume |
| Volume | result of multiplying length x width x height |
| Formula | used to find area ex: triangle is ½ b x h |
| Straight angle | measures 180 degrees |
| Acute angle | measures between 0 and 90 degrees |
| Obtuse angel | measures between 90 and 180 degrees |
| Invert | to reverse the position of numbers |
