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line a long narrow line or band
ray Part of a line that has one endpoint and extends forever in one direction
parallel lines In a plane,lines that never cross and stay the same distance apart.
perpendicular lines Two lines that intersect to form square corners or right angle
point An exact location in a space
line segment Part of a line that has two endpoints
plane An endless endpoint
angle Two ray that have the same endpoint
acute angle An angle whose measure is between 0* and 90*
right angle An angle whose measure is 90*
obtuse angle An angle whose measure is between 90* and 180*
straight angle An angle measuring 180*
vertex The point of a cone
protractor An instrument used to measure and draw angles
degrees A unit of measure for angles and temp
polygon A closed plane figure made up of line segments
regular polygon A polygon that has sides of equal length a angle of equal measure
triangle A polygon with three sides
quadrilateral A polygon with four sides
pentagon A polygon with five sides
hexagon A polygon with six sides
octagon A polygon with eight sides
equilateral triangle A triangle whose sides are all equal
isosceles triangle A triangle whose two sides are equal
scalene triangle A triangle whose no sides are equal
right triangle A triangle which one angle is a right angle
acute triangle A triangle whose measure is between 0* and 90*
obtuse triangle A triangle in which one angle is an obtuse angle
parallelogram A quadrilateral with both pairs of opposite sides parallel
trapezoid A quadrilateral that has exactly one pair of parallel sides
rectangle A parallelogram with four right angles
rhombus A parallelogram that has sides the same length
square A rectangle with all sides the same length
generalization A general statement
Created by: 17msowac