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equal

to have the same measure, quantity, or number

equate

to make equal

equation

a math problem that involves two things that are equal

equator

an imaginary line that separates the Northern and Southern Hemispheres.

equiangular

having all angles equal in size

equilateral

having all sides the same measure

equinox

one of two times during the year, when the day and night are nearly equal in length

equivalent

having the same amount, equal in force or value