| A | B |
|---|
| acute angel | an angle with a measure greater than 0 and less than 90 |
| acute triangle | a triangle that has 3 acute angles |
| congruent | line segments that have the same lenght |
| equilateral triangle | a triangle with all congruent sides |
| hypotenuse | the side opposite to the right angle of a triangle |
| irrational numbers | a number that cannot be expressed as a/b, where a+b are integers but b does not equal 0 |
| isosceles triangle | a triangle with 2 congruent sides |
| legs | the sides that are connected to the right angle of a right triangle |
| obtuse angle | an angle with a measure greater than 90 degrees but less than 180 degrees |
| obtuse triangle | a triangle with one obtuse angle |
| perfect square | rational numbers whose square roots are whole numbers |
| pythagorean theorem | if a triangle is a right angle then c(2)=a(2)+b(2) (these are squares not times 2) |
| radical sign | the symbol used to indicate a nonnegative square root |
| real numbers | the set of rational numbers and the set of irrational numbers together |
| right angle | an angle that measures 90 degrees |
| right triangle | a triangle with one right angle |
| scalene triangle | a triangle with no congruent sides |
| similar figures | figures that have the same shape but not necessarily the same size |
| square roots | one of the two equal factors of a number |
| straight angle | an angle with a measure equal to 180 degrees |
| triangle | a figure having 3 sides |
| vertex | a point where 2 sides of a polygon intersect |
