Quadrilateral
![Picture](/uploads/1/5/7/7/15778880/1360970200.jpg)
A quadrilateral is a shape with 4 straight sides.
Pentagon
![Picture](/uploads/1/5/7/7/15778880/6718588.gif?1360970347)
A pentagon is any shape with 5 straight sides.
Hexagon
![Picture](/uploads/1/5/7/7/15778880/8457257.gif?1360970461)
A hexagon is any shape with 6 straight sides.
Octagon
![Picture](/uploads/1/5/7/7/15778880/5165359.gif?1360970552)
An octagon is any shape with 8 straight sides.
Trapezoid
![Picture](/uploads/1/5/7/7/15778880/9129178.jpg?102)
A trapezoid is any shape with 4 sides and a pair of opposite sides parallel.
Parallelogram
![Picture](/uploads/1/5/7/7/15778880/6305827.gif?101)
A parallelogram's opposite sides are parallel and equal in length.
Polygon
![Picture](/uploads/1/5/7/7/15778880/9664226.gif)
A polygon is a 2-D shape and it has closed, straight lines.
Cylinder
![Picture](/uploads/1/5/7/7/15778880/2329446.jpg?110)
A cylinder is a 3-D shape that has 2 identical flat ends and 1 curved side.
Cone
![Picture](/uploads/1/5/7/7/15778880/3725377.jpg?59)
A cone has a circular base and 1 vertex.
Faces
![Picture](/uploads/1/5/7/7/15778880/1515937.gif?115)
A face is the individual surface of a solid object.
Edges
![Picture](/uploads/1/5/7/7/15778880/1911931.gif?104)
A edge is a line segment that joins 2 vertices.
Vertices
![Picture](/uploads/1/5/7/7/15778880/250144943.gif?133)
A vertex is a point where 2 or more straight lines meet.
Acute Angle
![Picture](/uploads/1/5/7/7/15778880/216745549.gif?126)
An acute angle is any angle less than 90 degrees.
Obtuse Angle
![Picture](/uploads/1/5/7/7/15778880/770587096.gif?135)
An obtuse angle is an angle more than 90 degrees.
Right Angle
![Picture](/uploads/1/5/7/7/15778880/923628379.gif?128)
A right angle is a angle that is right at 90 degrees.
Congruent
![Picture](/uploads/1/5/7/7/15778880/321942561.gif)
A congruent pair of shapes are any shapes that are the same size and shape.
Line Segment
![Picture](/uploads/1/5/7/7/15778880/460196280.gif)
A line segment is any line that has endpoints.
Ray
![Picture](/uploads/1/5/7/7/15778880/645002787.gif)
A ray is a line that has only has one endpoint.
Parallel Lines
![Picture](/uploads/1/5/7/7/15778880/186990628.gif)
Parallel lines are lines that are always the same distance apart and will never meet.
Intersecting Lines
![Picture](/uploads/1/5/7/7/15778880/565057937.jpg)
Intersecting lines are lines that have a place in them where lines cross over each other.
Perpendicular Lines
![Picture](/uploads/1/5/7/7/15778880/299922331.gif)
A perpendicular lines is a pair of lines that are right angles to each other.