Question | Answer |
A straight path of points that goes on and on in two directions. | line |
Lines that cross at one point. | intersecting lines |
Two intersecting lines that form right angles. | Perpendicular lines |
In a plane, lines that never intersect. | Parallel lines |
An exact location in space. | Point |
An endless flat surface. | Plane |
A figure formed by two rays that have the same endpoint. | Angle |
An angle that is less than a right angle. | Acute angle |
An angle that is greater than a right angle. | Obtuse angle |
A part of a line that has two endpoints. | Line segment |
An anlge that forms a square corner. | Right angle |
A part of a line that has one endpoint and continues endlessly in one direction. | Ray |
An angle that forms a straight line. | Straight angle |
A tool used to measure and draw angles. | Protractor |
The measurement used for angles. | Degrees |
Each of the line segments of a polygon. | Side |
A polygon with six sides. | hexagon |
The point where two rays meet to form an angle. The point where the sides of the polygon meet. The point where three or more edges meet in a solid figure that does not roll. The pointed part of a cone. | Vertex (plural,vertices) |
A polygon with five sides. | Pentagon |
A polygon with eight sides. | Octagon |
A polygon with four sides. | Quadrilateral |
A closed plane figure made up of line segments. | Polygon |
A polygon with three sides. | Triangle |
A triangle with three acute angles. | Acute triangle |
A triangle that has at least two equal sides. | Isosceles triangle |
A triangle in which all sides are the same length. | Equilateral triangle |
A triangle in which there is one right angle. | Right triangle |
A triangle in which there is one obtuse angle. | Obtuse triangle. |
A quadrilateral in which opposite sides are parallel. | Parallelogram |
A triangle in which no sides are the smae length. | Scalene triangle |
A quadrilateral in which opposite sides are parallel and all sides are the same length. | Rhombus |
A quadrilateral with four right angles. | Rectangle |
A quadrilateral with only one pair of parallel sides. | Trapezoid |
A quadrilateral with four right angles and all sides the same length. | Square |