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7th Geometry
Angles, Triangles
| Question | Answer |
|---|---|
| Ray | A part of a line that has one fixed end point and extends infinitely along the line from the end point. |
| Angle | A figure formed by two rays. |
| Vertex | A point where two or more lines come together. |
| Acute angle | An angle less than 90 degrees |
| Right angle | An angle equal to 90 degrees |
| Obtuse angle | An angle greater than 90 degrees but less than 180 degrees |
| Straight angle | An angle that equals 180 degrees |
| Supplementary angle | Two angles that total 180 degrees. |
| Complementary angle | Two angles that total 90 degrees. |
| Adjacent angles | Two angles that share the same vertex, but do not have any other relationship. |
| Vertical angles | A pair of angles opposite intersection lines. Vertical angles are equal to each other. |
| Equilateral triangle | A triangle that has ALL sides the same length |
| Isosceles triangle | A triangle that has EXACTLY two sides equal. |
| Scalene triangle | A triangle in which ALL sides are NOT the same |
| Acute triangle | A triangle with all three angles that are less than 90 degrees |
| Right triangle | A triangle with a 90 degree angle |
| Obtuse triangle | A triangle that has one angle more than 90 degrees |
Created by:
MsHarkness
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