Geometry: English Vocabulary List

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

"The curvature of the circle is constant."

"Curvature is the rate at which a curve deviates from a straight line"

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

"The torus is donut-shaped."

"A torus is a three-dimensional surface of revolution generated by revolving a circle around an axis that is coplanar with but does not intersect the circle itself."

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

"The crescent was curved."

"A crescent is a curved shape resembling a thin segment of a ring"

a rectangular figure that has unequal adjacent sides with arched angles

"The dining table was an oblong shape"

"She placed an oblong mirror above the fireplace to make the narrow hallway look much wider."

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

"A lozenge is shaped like a diamond."

"The old-fashioned sweets were shaped like a lozenge and had a pleasant minty flavor."