† obtusiangleadj.

Origin: A borrowing from Latin. Etymon: Latin obtusiangulus.

Etymology: < post-classical Latin obtusiangulus (11th cent.; c1120 in a British source) < obtusi- obtusi- comb. form + classical Latin angulus angle n.² Compare slightly earlier obtuse-angled adj.

Geometry. Obsolete. rare.

= obtuse-angled adj.

ΘΚΠ

the world > relative properties > number > geometry > angle > [adjective] > obtuse angled

blunt-angled1551

obtusiangle?a1560

obtuse1570

obtuse-angled1570

amblygon1605

amblygonal1618

obtusangulous1680

amblygonial1704

obtusangular1706

amblygonous1728

obtuse angular1782

?a1560 L. Digges Geom. Pract.: Pantometria (1571) ii. iii. sig. M j The Area of this Obtusiangle Isoscheles.

?a1560 L. Digges Geom. Pract.: Pantometria (1571) i. Defs. sig. B iij An Obtusiangle Triangle hath one obtuse angle.

This entry has been updated (OED Third Edition, March 2004; most recently modified version published online September 2019).

单词	obtusiangle
释义	† obtusiangleadj. Origin: A borrowing from Latin. Etymon: Latin obtusiangulus. Etymology: < post-classical Latin obtusiangulus (11th cent.; c1120 in a British source) < obtusi- obtusi- comb. form + classical Latin angulus angle n.² Compare slightly earlier obtuse-angled adj. Geometry. Obsolete. rare. = obtuse-angled adj. ΘΚΠ the world > relative properties > number > geometry > angle > [adjective] > obtuse angled blunt-angled1551 obtusiangle?a1560 obtuse1570 obtuse-angled1570 amblygon1605 amblygonal1618 obtusangulous1680 amblygonial1704 obtusangular1706 amblygonous1728 obtuse angular1782 ?a1560 L. Digges Geom. Pract.: Pantometria (1571) ii. iii. sig. M j The Area of this Obtusiangle Isoscheles. ?a1560 L. Digges Geom. Pract.: Pantometria (1571) i. Defs. sig. B iij An Obtusiangle Triangle hath one obtuse angle. This entry has been updated (OED Third Edition, March 2004; most recently modified version published online September 2019). < adj.?a1560
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