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equi·an·gu·lar | \ ˌē-kwi-ˈaŋ-gyə-lər 
, ˌe-kwi- \
, ˌe-kwi- \Definition of equiangular
: having all or corresponding angles equal
mutually equiangular parallelograms
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Time Traveler for equiangular
The first known use of equiangular was in 1660
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