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# Math 8 Geometry

TermDefinition
Translation An image SLIDES on a graph.
Reflection An image FLIPS over a line of symmetry.
Rotation An image TURNS on a graph.
Dilation An image gets larger or smaller by a scale factor.
Scale Factor The number you multiply by.
If Triangle ABC is dilated, what is it's new name? Triangle A'B'C'
The prime mark (for example: A') means.... The new image after being transformed.
Supplementary Angles Two angles that add to make a straight line or 180 degrees.
Vertical angles Angles diagonal from each other are congruent.
Adjacent angles Angles that are beside each other.
Complimentary Angles Angles that add to make 90 degrees or a right angle.
Triangles always have how many degrees? 180
The exterior angle of a triangle is always equal to.... The sum of the other two interior angles.
Pythagorean Theorem is.... a^2 + b^2 = c^2
Hypotenuse Longest side of a right triangle; the side that doesn't touch the right angle (c in the Pythagorean Theorem)
Legs of Right Triangle The two shortest sides of a right triangle; the two sides that meet at the right angle (a and b in the Pythagorean Theorem)
Volume of Cylinder V = pi * r^2 * h
Volume of Cone V = 1/3 * pi * r^2 * h
Volume of Sphere V = 4/3 * pi * r^3
Created by: cpierce