Geometry Super Challenge

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An online crossword puzzle with 15 words. Play it free at AgileCrosswords.com.

Clues

2 angles that add up to 90 are
a geometric figure that consists of no curved lines
another term for surface area
the area formula is 1/2(b1+b2)h
the ratio that relates the two legs of a right triangle
a four sided shape with all sides equal, equal diagonals, and perpendicular diagonals
a segment with endpoints that both lie on a circle
a pyramid with four congruent sides
a 3 sided polygon
the opposite of the sine function
if you take a cross section of a cone that does not intersect the center the result is a
a nueve sided polygon
all points in space equidistant from 1 point form a
a triangle with an angle of greater than 90 degrees
a very tasty number