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Unit 6 - Mr. Hunt

7th grade Geometry

side line segments that make up a polygon
angle two rays or lines that share a common point or vertex
congruent equal in size
opposite directly across from
parallel two lines that would never intersect when headed in both directions forever
perpendicular two lines that intersect at a 90 degree angle
base the line on a shape that is perpendicular to the height
height the line on a shape that is perpendicular to the base
circumference the perimeter of a circle
perimeter the distance around the outside of the shape, the sum of the length of all the shape's sides
area the space inside a shape
equidistant to have equal distance from a given point
Pi the ratio of the diameter of a circle to its circumference, ~ 3.14
straight angle a 180 degree angle
right angle a 90 degree angle
obtuse angle an angle greater than 90 degrees
acute angle an angle less than 90 degrees
vertical angles the congruent opposite angles that are formed when two lines intersect
adjacent angles two angles that share a common side, line, or ray
complimentary angles two angles that sum to 90 degrees
supplementary angles two angles that sum to 180 degrees
Formula for Circumference C = Pi(d)
Formula for diameter of a circle d = 2r
Formula for radius of a circle r = d/2
Formula for area of a circle A = Pi(r^2)
Formula for area of a rectangle A = l(w) or A = b(h)
Formula for area of a triangle A = (b(h))/2
Formula for area of a parallelogram A = b(h)
Formula for area of a trapezoid A = ((b1 + b2)h)/2
Formula for volume of a prism V = (base area)height
Formula for surface area SA = add up the area of all the faces
Formula for the volume of a rectangular prism V= b(h)(d)
Formula for the volume of a triangular prism V=(b(h)(.5))(d)
Formula for the volume of a cylinder V=Pi(r^2)(height of the cylinder)
Created by: mrhunt