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 strait 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 | Not parallel or perpendicular |
Intersect | To cut or divide by passing through one another |
Portractor | A protractor is a tool that is used to measure angles in degrees |
Degree | A unit for measuring angles also a unit for measuring temperature |
Right Angle | An angle that measures 90 degrees |
Strait Angle | An angle that measures 180 degrees |
supplementary angles | angles having a sum of 180 degrees |
complementary angles | angles having a sum of 90 degrees |
opposite angles | the angles formed when two lines intersect |
vertical angles | pairs of opposite angles formed by intersecting lines |
Polygon | A closed plane figure with sides made of strait line segments |
Congruent | Exactly the same size and shape |
Isosceles Triangle | A triangle with at least two congruent sides |
Equilateral Triangle | A triangle with 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 degrees |