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What is 1 + 3?
more or less correct or exact
an approximate answer
the branch of mathematics that deals with adding, subracting, multiplying, and dividing
a product of the number multiplied by a whole number
the branch of mathematics that deals with the measuring of line, angles, surfaces, and solids
a figure with eight sides
the distance around a circle
the distance around a polygon
referring to line that never intersect
coming together to form a right angle