Description

The following riddles are used in this game.

an angle less than 90 degrees but more than 0 degrees~acute angle
a triangle whose interior angles are all acute~acute triangle
elevation above sea level or above the earth’s surface~altitude
the space between two lines or planes that intersect~angle
a continuous portion of a circle~arc
an area that is in the middle of some larger region~center
in or near an inner area~central
a combination of three or more notes that blend harmoniously~chord
ellipse in which the two axes are of equal length~circle
the length of the closed curve of a circle~circumference
two angles whose sum is a right angle~complementary angles
a shape with a circular base and sides tapering to a point~cone
corresponding in character or kind~congruent
of equal importance, rank, or degree~coordinate
lying in the same plane~coplanar
ratio of the adjacent side to the hypotenuse of a right-angled triangle~cosine
a surface generated by rotating a line around a fixed line~cylinder
a specific identifiable position in a continuum or series~degree
the length of a straight line through the center of a circle~diameter
the property created by the space between two objects~distance
a three-sided regular polygon~equiangular triangle
a three-sided regular polygon~equilateral triangle
being essentially equal to something~equivalent
the supplement of an interior angle of a polygon~exterior angle
the mean of n numbers expressed as the n-th root of their product~geometric mean
written on or in a surface~inscribed
a triangle with two equal sides~isosceles triangle
determine the dimensions of something or somebody~measure
relating to or situated in or extending toward the middle~median
a point equidistant from the ends of a line or the extremities of a figure~midpoint
an angle between 90 and 180 degrees~obtuse angle
a triangle that contains an obtuse interior angle~obtuse triangle
being everywhere equidistant and not intersecting~parallel
a quadrilateral whose opposite sides are parallel and equal~parallelogram
a line enclosing a plane area~perimeter
a closed plane figure bounded by straight sides~polygon
a solid figure bounded by plane polygons or faces~polyhedron
a polyhedron with two congruent and parallel faces~prism
relation with respect to comparative quantity or magnitude~proportion
a polyhedron having a polygonal base and triangular sides~pyramid
a four-sided polygon~quadrilateral
a straight line from the center to the perimeter of a circle~radius
relation with respect to comparative quantity or magnitude~ratio
a group of nearly parallel lines of electromagnetic radiation~ray
a parallelogram with four right angles~rectangle
having four right angles~rectangular
a polygon with all sides and all angles equal~regular polygon
a parallelogram with four equal sides~rhombus
the 90 degree angle between two perpendicular lines~right angle
a triangle with one right angle~right triangle
a triangle with no two sides of equal length~scalene triangle
a straight line that intersects a curve at two or more points~secant
a particular aspect of life or activity~sector
one of several parts that fit with others to make a whole~segment
the quality of being alike~similarity
ratio of the length of the side opposite the given angle to the length of the hypotenuse of a right-angled triangle~sine
be at an angle~slope
a round three-dimensional closed surface~sphere
a polygon with four equal sides and four right angles~square
a quantity obtained by the addition of a group of numbers~sum
the extent of a 2-dimensional surface enclosed within a boundary~surface area
a line that touches a curve but does not intersect it~tangent
the act of changing in form or shape or appearance~transformation
extending or lying across~transversal
a quadrilateral with two parallel sides~trapezoid
a three-sided polygon~triangle
poorly balanced or matched in quantity or value or measure~unequal
either of two equal and opposite angles formed by the intersection of two straight lines~vertical angle