CIRCLE
a straight line from the center to the circumference of a circle or sphere
RADIUS
a line segment connecting the two vertices of the ellipse
MAJOR AXIS
a structure of hexagonal cells of wax, made by bees to store honey and eggs
HONEYCOMB
a body or geometric figure having three dimensions
SOLID
a surface with only one side (when embedded in three-dimensional Euclidean space) and only one boundary curve
MOBIUS STRIP
a segment whose endpoints lie on a circle
CHORD
a line segment connecting the two co-vertices of the ellipse
MINOR AXIS
a line from the centre of a regular polygon at right angles to any of its sides
APOTHEM
any polyhedron having twenty plane faces
ICOSAHEDRON
a surface or solid formed by rotating a closed curve, especially a circle, about a line which lies in the same plane but does not intersect it
TORUS
a coplanar straight line that has one single point in common with a circle
TANGENT
one of the two points on the major axis, spaced equally each side of the centre
FOCUS
a circle that passes through all the vertices of the polygon
CIRCUMSCRIBED CIRCLE
a prism with six square faces
CUBE
an instance of topological equivalence
HOMEOMORPHISM
a region bounded by two radii of equal length with a common center and either of the two possible arcs
sector
a symmetrical open curve formed by the intersection of a circular cone with a plane at a smaller angle with its axis than the side of the cone
HYPERBOLA
the covering of a surface, often a plane, using one or more geometric shapes, called tiles, with no overlaps and no gaps
TESSELLATION
a three dimensional shape with a circular base and a vertex opposite the base
CONE
crush (something, typically paper or cloth) so that it becomes creased and wrinkled
CRUMPLE
the perimeter of a circle
CIRCUMFERENCE
it refers to how flat or round the shape of the ellipse is
ECCENTRICITY
the property a shape has when it looks the same after some rotation by a partial turn
ROTATIONAL SYMMETRY
the four-dimensional analogue of the cube
TESSERACT
an informal expression used to describe topology
RUBBER SHEET GEOMETRY