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GeometryAB
Mrs. Brown
| Question | Answer |
|---|---|
| point | It is represented by a dot and named by a capital letter. It represents position. |
| line | a connected set of infinitely many points and extends infinitely in two opposite directions |
| plane | an infinite set of points forming a connected flat surface and extends infinitely in all directions |
| postulate | a statement that is assumed true without proof |
| theorem | a statement that can be proven |
| line segment | a connected piece of a line with two endpoints and is named by its endpoints |
| midpoint | a line segment that is the half way point from the endpoints |
| ray | a piece of a line with only one endpoint and continues forever in one direction |
| angle | two rays with the same endpoint |
| degrees | an angle is measured by |
| angle bisector | a ray that divides an angle into two equal angles |
| right angle | an angle that measures 90 degrees |
| acute angle | an angle that measures less than 90 degrees |
| obtuse angle | an angle that measures greater than 90 degrees |
| straight angle | an angle that measures 180 degrees |
| adjacent angle | two angles that share a common side and share a common vertex |
| vertical angle | formed when two lines intersect and form four angles...these angles are not adjacent angles |
| complementary angles | two angles whose sum is 90 degrees |
| supplementary angles | two angles whose sum is 180 degrees |
| intersecting lines | two or more lines that meet at a point |
| perpendicular lines | two lines that intersect and form right angles |
| parallel lines | two lines, both in the same plane,that never intersect, and remain the same distance apart at all times |
| parallel planes | two planes that do not intersect |
| equiangular triangle | a triangle having all angles of equal measure |
| equilateral triangle | a triangle with all three sides equal in measure |
| isosceles triangle | a triangle in which at least two sides have equal measure |
| scalene triangle | a triangle with all three sides of different measure |
| altitude of an angle | angle height |
| triangle | three-sided polygon |
| quadrilateral | four-sided polygon |
| pentagon | five-sided polygon |
| hexagon | six-sided polygon |
| heptagon | seven-sided polygon |
| octagon | eight-sided polygon |
| nonagon | nine-sided polygon |
| decagon | ten-sided polygon |
| perimeter | the total distance around an object or a shape |
| area |
Created by:
ng
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