O2017-04-02T19:45:41+00:00

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Term
Definition
obtuse angle an angle that is greater than 90° but less than 180°
obtuse
octagon a polygon with 8 sides
octagon
ordinal number numbers that tell position: 1st, 2nd, 3rd, 4th, 5th, 6th, 7th, 8th, 9th, 10th……
ordinate the y value in a coordinate (x, y)
origin where the x and y axes meet in a number plane
origin in rectilinear motion, the origin is when x = 0
orthogonal involving right angles, at right angles
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