rhombus vs. parallelogram
rhombus vs. parallelogram: What's the difference?
A parallelogram is a shape with four sides in which the opposite sides are parallel to each other. A rhombus is a specific type of parallelogram in which all four sides are the same length. When the four corners of a parallelogram are right angles (meaning none of the sides are slanted), it’s called a rectangle. When the four corners of a four-sided shape are right angles and its sides are all the same length, it’s called a square.
[rom-buhs]
/ ˈrɒm bəs /
noun
plural
rhombuses, rhombi-
an oblique-angled equilateral parallelogram; any equilateral parallelogram except a square.
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an equilateral parallelogram, including the square as a special case.
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a rhombohedron.
[par-uh-lel-uh-gram]
/ ˌpær əˈlɛl əˌgræm /