Question | Answer |
Ray | A part of a line that has one endpoint and extends without end in one direction. |
Angle | A figure formed by two rays or line segments with a common endpoint. |
Line | A straight path that goes on forever in opposite directions. |
Perpendicular | Lines, line segments, or rays are perpendicular if they form right angles. |
Parallel | The same distance apart at every point. |
Oblique | Lines that are not parallel or perpendicular. |
Intersect | To cut or divide by passing through or across. |
Protractor | A tool used to measure angles. |
Degree | A Unit of measuring angles.Also a unit for measuring angles. |
Right Angle | An angle that measures 90 degrees. |
Straight Angle | An angle of 180 degrees. |
Sumpplementary Angles | Angles having a sum of 108 degrees. |
Complementary Angles | Angles having a sum of 90 degrees. |
Opposite Angle | When two angles intersect. |
Vertical Angle | Pairs of opposite angles formed by intersecting lines. |
Opposite Angles | When two lines intersect. |
Vertical Angle | Pairs of opposite angles formed by intersecting lines. |
Polygon | A closed plane figure with sides made of straight line segments. |
Congruent | Exactly the same size and shape. |
Isosceles Triangle | A triangle with at least two congruent sides. |
Equilateral | Having all equal sides. |
Scalene Triangle | A triangle with no equal sides. |
Acute Triangle | A triangle with three acute angles. |
Obtuse Triangle | A triangle with one obtuse angle. |
Right Triangle | A triangle with one right angle. |
Right Trapezoid | A trapezoid with at least one right angle. |
Circle | A plane figure that forms a closed path so that all the points on the path are the same distance from a point called the center. |
Reflex Angle | An angle greater than 180. |