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Geometry A Presentation of Lines and Shapes Presented By: Ebony Fails line A line is the straight path connecting two points and extending beyond the points in both directions line segment All points between two given points (including the given points themselves). ray A part of a line starting at a particular point and extending infinitely in one direction. right angle A carpenter’s square forms a right angle A right angle is a 90° angle acute angle An angle that is less than 90° obtuse angle An angle that has measure more than 90° and less than 180°. intersecting lines Intersecting line are lines that cross each other. parallel lines Lines that do not cross or touch are parallel. perpendicular lines Lines that meet at a point and form 90° angles. Cone A three dimensional figure with a single base tapering to an apex. Cylinder An object or shape with straight sides and circular ends of equal size. rectangular prism A solid (3-dimensional) object which has six faces that are rectangles. It is a prism because it has the same cross-section along a length. Sphere A globe similar to the shape of a circle. Pyramid A polyhedron with a polygonal base and lateral faces that taper to an apex. cube A regular polyhedron for which all faces are squares. The End Thank you! Ebony