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

Here, you will learn some English words related to Geometry that are necessary for the Academic IELTS exam.

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Vocabulary for Academic IELTS (8)

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

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

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

Ex: The dual of octahedron is a cube , and vice versa , forming a pair of dual polyhedra .
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a three-dimensional figure with twelve regular pentagonal faces, thirty edges, and twenty vertices

Ex: The faces of dodecahedron can be inscribed with regular pentagons , creating a geometric relationship .
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a three-dimensional figure with twenty equilateral triangle faces, thirty edges, and twelve vertices

Ex: The regular icosahedron has been historically significant, featuring prominently in mathematical investigations and artistic representations.
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curvature
[noun]

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

Ex: Engineers curvature in designing roads and railways to ensure safe and smooth transitions between curves .
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parabola
[noun]

(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

Ex: The quadratic function ’s graph is always parabola.
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hyperbola
[noun]

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

Ex: Hyperbolas find applications in engineering, particularly in the design of antennas and satellite orbits.
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torus
[noun]

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

Ex: The large sculpture in the park resembled torus, captivating the attention of passersby .
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frustum
[noun]

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

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crescent
[noun]

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

Ex: crescent of the new moon was barely visible against the twilight sky .
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helicoid
[noun]

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

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annulus
[noun]

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

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rhombus
[noun]

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

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asymptote
[noun]

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

Ex: Exponential functions may exhibit asymptotes, indicating stability in the long run .
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trapezoid
[noun]

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

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lattice
[noun]

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

Ex: The botanical garden contained displays of flowering vines trained to grow through lattices.
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oblong
[noun]

a rectangular figure that has unequal adjacent sides with arched angles

Ex: The garden featured an oblong pond with curved corners, creating a peaceful and inviting atmosphere.
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lozenge
[noun]

(geometry) a figure with four sides and two opposite angles more than 90° and two of less than 90°

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icosagon
[noun]

a polygon with twenty sides and twenty angles

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