Talking about Geometry: English Vocabulary List

(geometry) any flat shape with four straight sides, the opposite sides of which are equal and parallel to each other

"A parallelogram is a four-sided shape with opposite sides that are parallel."

"A rectangle is a special type of parallelogram where all four angles are right angles."

(geometry) a polyhedron with four flat sides, a triangular pyramid

"The tetrahedron has four triangular faces."

"A tetrahedron is a three-dimensional shape composed entirely of four triangular faces."

a geometric figure with eight triangular faces, twelve edges, and six vertices

"An octahedron has eight triangular faces."

"An octahedron is a polyhedron with eight faces"

a three-dimensional figure with twelve regular pentagonal faces, thirty edges, and twenty vertices

"A dodecahedron has twelve pentagonal faces."

"A dodecahedron is a three dimensional shape with twelve flat pentagonal faces that are all identical."

a three-dimensional figure with twenty equilateral triangle faces, thirty edges, and twelve vertices

"The icosahedron has twenty triangular faces."

"An icosahedron is a regular polyhedron with twenty equilateral triangle faces"

(geometry) a symmetrical open curve that is similar to the path of an object thrown into the air passes till it falls back to earth

"The parabola is a curve."

"The ball flew in a perfect parabola before landing exactly where the player had aimed it."

a geometric curve formed by the intersection of a plane with two cones, resulting in two symmetrical branches

"The hyperbola has two separate curves."

"A hyperbola is a conic section formed by slicing a double cone at a steep angle"

the section of a solid shape that remains after a parallel cut, featuring a flat top and a bottom that is larger or smaller than the top

"The frustum is a sliced cone."

"A frustum is the portion of a solid that lies between two parallel planes cutting the object"

a surface in three-dimensional space formed by moving a straight line along a helix

"The helicoid looks like a spiral ramp."

"A helicoid is a minimal surface generated by simultaneously rotating and translating a line"

a mathematical shape formed by the region between two concentric circles in a plane

"The annulus is a ring shape."

"An annulus is a plane region bounded by two concentric circles"

(geometry) a flat shape with four equal sides in which opposite angles are equal

"A rhombus has four equal sides."

"A rhombus looks like a slanted square and has four equal sides with equal opposite angles."

a straight line that a curve approaches indefinitely but never intersects, characterizing the limiting behavior of the curve

"The asymptote is a line the graph approaches."

"An asymptote is a straight line that a curve approaches infinitely closely but never intersects"

(geometry) a flat shape with four flat sides, two of which are parallel

"The trapezoid has one pair of parallel sides."

"A trapezoid is a quadrilateral with at least one set of parallel sides"

a structure made of strips of wood, metal, or other rigid material arranged in a criss-crossed, grid-like pattern

"The lattice was wooden."

"The iron gate featured an elegant lattice design that allowed light to pass through."

a polygon with twenty sides and twenty angles

"An icosagon has twenty sides."

"An icosagon is a polygon with twenty sides"