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a line drawn from the vertex of a triangle perpendicular to the side opposite the vertex.
a small group of people or items selected by researchers from within a larger population
the number being repeatedly multiplied in a power. In the power 23= 2 x 2 x 2, the 2 is the base...
a trigonometric rule that states that the ratio of any side of a triangle and the sin of the...
the point or points at which a graph cuts or intersects the x-axis.