Question | Answer |
Point | An exact location in space |
Line | A straight path of points that goes on forever in two directions |
Plane | An endless flat surface |
Line segment | Part of a line and has two end points |
Ray | Part of a line that has only one endpoint and extends forever in one direction |
Parallell lines | Never cross and stay the same distance part |
Intersecting lines | Pass through the same point |
Perpendicular lines | Intersecting lines that form square corners |
Angle | Formed by two rays that have the same endpoint |
Vertex | The common endpoint |
Acute angle | Has a measure between 0 and 90° |
Right angle | Has a measure of 90° |
Obtuse angle | Has a measure between 90° and 180° |
Straight angle | Has a measure of 180° |
Polygon | Closed plane figure made up of line segments |
Regular polygon | Sides of equal length and angles of equal measure |
Triangle | 3 sides |
Quadrilateral | 4 sides |
Pentagon | 5 sides |
Hexagon | 6 sides |
Octagon | 8 sides |
Equilateral triangle | All sides are the same length |
Isosceles triangle | Two sides the same length |
Scalene triangle | No sides are the same length |
Right triangle | One angle is a right angle |
Acute triangle | All three angles are acute |
Obtuse triangle | One angle is an obtuse angle |
Parallelogram | Both pairs of opposite sides parallel and equal in length |
Trapezoid | Only one pair of parallel sides |
Rectangle | A parallelogram with four right angles |
Rhombus | A parallelogram with all sides the same length |
Square | A rectangle wth all sides the same length |