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Geometry Vocabulary Set in IELTS Academic (Band 6-7): Full and Detailed List

The 'Geometry' vocabulary set in 'IELTS Academic (Band 6-7)' is carefully selected from standard international textbook sources, helping you master vocabulary in a short time. Comprehensive compilation of definitions, illustrative examples, and standard pronunciation...

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cylinder

/ˈsɪl.ɪn.dɚ/

Example:

The engine block contains several cylinders.

sphere

/sfɪr/

Example:

The Earth is approximately a sphere.

hexagon

/ˈhek.sə.ɡɑːn/

Example:

A honeycomb is made up of many small hexagons.

cone

/koʊn/

Example:

The ice cream was served in a waffle cone.

tangent

/ˈtæn.dʒənt/

Example:

The speaker went off on a tangent about his childhood.

ray

/reɪ/

Example:

A ray of sunlight pierced through the clouds.

isosceles triangle

/aɪˌsɑː.sə.liːz ˈtraɪ.æŋ.ɡəl/

Example:

In an isosceles triangle, the angles opposite the equal sides are also equal.

octagon

/ˈɑːk.tə.ɡɑːn/

Example:

The stop sign is a perfect example of an octagon.

swirl

/swɝːl/

Example:

The leaves swirled in the autumn wind.

vertex

/ˈvɝː.t̬eks/

ellipse

/iˈlɪps/

Example:

The planet orbits the sun in an ellipse.

polygon

/ˈpɑː.li.ɡɑːn/

Example:

A square is a type of regular polygon with four equal sides and four right angles.

pentagon

/-t̬ə.ɡɑːn/

Example:

The architect designed a building in the shape of a pentagon.

helix

/ˈhiː.lɪks/

Example:

The DNA molecule has a double helix structure.

decagon

/ˈdɛk.ə.ɡɑːn/

Example:

The architect designed a building in the shape of a decagon.

nonagon

/ˈnɑː.nə.ɡɑːn/

Example:

A regular nonagon has nine equal sides and internal angles of 140 degrees.

heptagon

/ˈhɛptəˌɡɑn/

Example:

The architect designed a building in the shape of a heptagon.

cuboid

/ˈkjuː.bɔɪd/

Example:

A brick is an example of a cuboid.

spheroid

/ˈsfɪr.ɔɪd/

Example:

The Earth is not a perfect sphere but an oblate spheroid.

prism

/ˈprɪz.əm/

Example:

The light was refracted as it passed through the glass prism.

polyhedron

/ˌpɑː.liˈhiː.drɑːn/

Example:

A cube is a regular polyhedron with six square faces.

hexagram

/ˈhɛksəˌɡræm/

Example:

The ancient text described a powerful ritual involving a hexagram.

oblique angle

/əˈbliːk ˈæŋ.ɡəl/

Example:

The sun's rays hit the Earth at an oblique angle during the winter.

reflex angle

/ˈriː.fleks ˌæŋ.ɡəl/

Example:

A reflex angle is the larger angle formed when two lines meet.

diameter

/daɪˈæm.ə.t̬ɚ/

Example:

The diameter of the circle is 10 centimeters.

circumference

/sɚˈkʌm.fɚ.əns/

Example:

The circumference of the earth is about 24,901 miles.

radius

/ˈreɪ.di.əs/

Example:

The radius of the circle is 5 cm.
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