Math Dictionary o
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Oblique line and a plane:
A line and a plane that are neither parallel nor perpendicular.
An angle whose measure is greater than 90 degrees and less than 180 degrees.
A triangle having one obtuse angle.
A polygon with 8 sides.
A polyhedron having eight faces. A regular octahedron is one of the five Platonic solids and has eight equilateral triangles as faces.
Odd number :
Any integer that CANNOT be divided exactly by 2.
An instrument (usually on the instrument panel of a car) that records distance traveled.
(A speedometer measures the current speed)
It is also known as Frequency curve. It is used to find median of the data.
A function where the inverse is also a function.
An Operator is a symbol (such as +, ×, etc) that represents an operation (i.e. you want to do something with the values).
Two collinear rays whose intersection is exactly one point.
Opposite side in a right triangle:
The side across from an angle. In a right triangle the hypotenuse is opposite the right angle and each leg is opposite one of the acute angles
A transformation of the plane that changes the orientation of a figure.
Order of Operations :
The rules of which calculation comes first in an expression(PEDMAS).
Two numbers that are used to identify the position of a point in a plane. The two numbers are called coordinates and are represented by (x, y).
Three numbers that are used to identify the position of a point in space. The three numbers are called coordinates and are represented by (x, y, z).
Ordinal Number :
A number that tells the position of something in a list.
The vertical coordinate of a two-dimensional rectangular coordinate system; usually denoted by y.
The arrangement of the points, relative to one another, after a transformation; the reference made to the direction traversed (clockwise or counterclockwise) when traveling around a geometric figure.
The point in the Cartesian coordinate plane at which the horizontal and vertical axes intersect, designated by the ordered pair (0,0).
The point of concurrence of the three altitudes of a triangle.
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