Question | Answer |
Point | An exact position in space |
Line | An infinite set of points forming a straight path in two directions |
Line Segment | A part of a line defined by two end points |
Ray | A part of a line that has one endpoint and extends indefinitely in one direction |
Plane | A flat surface that extends indefinitely in all directions |
Angle | Two rays that share an end |
Right Angle | An angle that measures exactly 90 degrees |
Acute Angle | An angle with a measure of less than 90 degrees |
Obtuse Angle | An angle with a measure of more than 90 degrees |
Straight Angle | An angle with a measure of exactly 180 degrees |
Reflex Angle | An angle that measures more than 180 degrees |
Vertex | The point at which two line segments, lines, or rays meet to form an angle |
Congruent | Having the exact same shape and size |
Parallel Lines | Always the same distance apart. They never intersect. |
Perpendicular Lines | Two lines forming right angles |
Complimentary Angles | 2 angles that add up to 90 degrees |
Rectangle | Quadrilateral with 2 pairs of opposite sides parallel and congruent and 4 right angles |
Adjacent Angles | Angles that are next to each other (share a vertex and a side between them) |
Vertical Lines | Opposite angles formed by intersecting lines |
Rhombus | Quadrilateral with 2 pairs of opposite sides parallel and all sides equal |
Isoosceles | Triangle with 2 sides equal |
Equilateral | Triangle with all sides equal |
Quadrilateral | 4-sided shape |
Alternate Exterior Angles | Angles on opposite sides of the transversal and outside the parallel lines |
Hexagon | 6-sided shape |
Octagon | 8-sided shape |
Alternate Interior Angles | Angles on opposite sides of the transversal and inside the parallel lines |
Supplementary Angles | 2 angles that add up toe 180 degees |
Pentagon | 5-sided shape |
Decagon | 10-sided shape |
Vertex | The point where an angle is formed |
Parallelogram | Quadrilateral with 2 pairs of opposite sides parallel |
Scalene | Triangle with no sides equal |
Corresponding Angles | "Matching Angles" In the same location on a different line |
Trapezoid | Quadrilateral with 1 pair of opposite sides parallel |
Square | Quadrilateral with 2 pairs of opposite sides parallel all sides congruent, and 4 right angles |