Vocabulary for IELTS Academic (Band 8-9) - Geometry

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

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

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

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

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

the measure of how much a curve or surface deviates from being straight or flat at a specific point

(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

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

a solid shape resembling a donut or ring, made by spinning a circle around a line that does not cut through the circle

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

a curved shape with narrow points at the ends that appears wider in the middle, like the shape of the moon in its first and last quarters

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

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

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

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

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

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

a rectangular figure that has unequal adjacent sides with arched angles

(geometry) a four-sided figure with opposite equal angles, forming a diamond shape

a polygon with twenty sides and twenty angles