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Math Unit 6: Part 1

point An exact location in space
line A straight path of points that goes on and on in two directions
line segment A part of a line that has two endpoints
ray A part of a line that has one endpoint and continues endlessly in one direction
angle A figure formed by two rays that have the same endpoint
vertex The point where two rays meet. The point where the sides of a polygon meet. The point where three or more edges of a solid figure meet
right angle An angle that forms a square corner
acute angle An angle that is less than a right angle
obtuse angle An angle that is greater than a right angle
straight angle An angle that forms a straight line
parallel lines In a plane, lines that never intersect
intersecting lines Lines that cross at one point
perpendicular lines Two intersecting lines that form right angles
plane figure A figure with only two dimensions
solid figure A figure that has length, width, and height
edge A line segment where two faces of a solid figure meet
face A flat surface of a solid that does not roll
net A pattern used to make a solid
polygon A closed plane figure made up of line segments
side Each of the line segments of a polygon
triangle A polygon with 3 sides
quadrilateral A polygon with 4 sides
pentagon A plane figure with 5 sides
hexagon A polygon with 6 sides
octagon A polygon with 8 sides
Created by: RSachs
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