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Chapter 6 & 7 Math Formulas/Vocabulary
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Gravity
Terms in this set (29)
Complementary Angles
Two angles whose sum is 90 degrees
Supplementary Angles
Two angles whose sum is 180 degrees
Adjacent Angles
Two angles that share a common side and have the same vertex
vertical angles
A pair of opposite congruent angles formed by intersecting lines
Equilateral Triangle
A triangle with three congruent sides
area
The number of square units required to cover a surface.
perimeter
The distance around a figure
Perimeter of a rectangle
P= 2L + 2w
Area of a rectangle
A=lw
Area of a parallelogram
A=bh
Area of a triangle
A= 1/2 bh
Area of a trapezoid
A=1/2h(b1+b2)
Area of a circle
A=πr²
Circumference of a circle
C = πd or C = 2πr
3-D Figure or Solid
a figure that does not lie in a plane. It is not flat.
Face
a flat surface of a 3 dimensional figure
Edge
The line segment where two faces of a solid figure meet.
Prism
A solid figure that has two congruent, parallel polygons as its bases. Its sides are rectangles
cube
A prism with six square faces
cylinder
A solid shape with one curved surface and two congruent circular bases.
Pyramid
A solid shape with a polygon as a base and triangular faces that come to a point (vertex or apex)
Cone
A three dimensional shape with a circular base and a vertex opposite the base
Sphere
A solid shape that is perfectly round like a ball. No faces, edges, or vertices.
Surface area of a rectangular prism
Find the area of all six sides (front/back, top/bottom, right side/left side) and add them up.
OR:
2lw + 2lh + 2wh
Surface Area of a Triangular Prism
2 triangles + front, back, bottom
(rectangles + rectangle +
rectangle)
Surface Area of a Cylinder
SA=2πr²+2πrh
Volume of a cylinder
V=πr²h
Volume of a rectangular prism
V=lwh
Volume of a triangular prism
V = area of base(prism height)
OR
V = 1/2bh(prism height)
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