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pre algebra vocab
triangles,squares,pythagorean theorem
| Question | Answer |
|---|---|
| perfect square | rational numbers whose square roots are whole numbers |
| square root | one of the two factors of a number |
| radical sign | the symbol used to indicate a non negative square root |
| real numbers | the set of rational numbers together with the set of irrational numbers |
| irrational numbers | a number that cannot be expressed as a over b where a and b are intergers and b does not equal zero |
| point | a specific location in space with no size or shape |
| ray | a part of a line that extends indefinitely in one direction |
| line | a never ending straight path |
| angle | two rays with a common end point |
| vertex | the common end point of the rays froming an angle |
| sides | two rays that make up an angle |
| degree | the most common unit of measure for angles |
| protractor | an instrument used to measure angles |
| acute angle | an angle that measures less than 90 degrees |
| right angle | an angle that measures 90 degrees |
| obtuse angle | an angle with the measure greater than 90 degrees |
| straight angle | an angle with a measure equal to 180 degrees |
| line segment | part of a line containing two end points and all points between them |
| triangle | a polygon having three sides |
| acute triangle | a triangle that all angles are less than 90 degrees |
| obtuse triangle | a triangle with one angle over 90 degrees |
| right triangle | a triangle with one 90 degree angle |
| congruent | line segments that have the same length, or angles that have the same measure |
| scalene triangle | a triangle with no congruent sides |
| isosceles triangle | a triangle that has at least two congruent sides |
| equilateral triangle | a triangle with all sides congruent |
| legs | the sides that are adjacent to the right angle of a right triangle |
| hypotenuse | the side opposite the right angle in a right triangle |
| pythagoream theorem | if a triangle is a right triangle, then the square of the length of the hypotenuse is equal to the sum of the squares of the lengths of the legs |
Created by:
brennaca
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