Related formse·qui·an·gu·lar·i·ty, nounun·e·qui·an·gu·lar, adjective
Examples from the Web for equiangular
The proof of Euclid's axiom looked for in the properties of the Equiangular Spiral.A Budget of Paradoxes, Volume I (of II)|Augustus De Morgan
It opens with a definition of a regular polygon as one that is both equilateral and equiangular.The Teaching of Geometry|David Eugene Smith
Euclid does not use the word regular, but he describes the polygons in question as equiangular and equilateral.