dodecagon

noun 0.815

hexagon

noun 0.719

nonagon

noun 0.711

decathlon

noun 0.707

heptagon

noun 0.697

tetragon

noun 0.688

octagon

noun 0.684

decathlete

noun 0.663

pentagon

noun 0.653

decade

noun 0.639

decamer

noun 0.638

dodecahedron

noun 0.622

tenth

noun 0.619

decennium

noun 0.618

decennial

noun 0.610

decile

noun 0.593

decane

noun 0.584

grade ten

noun 0.584

octahedron

noun 0.573

pentagram

noun 0.566

decan

noun 0.566

regular polygon

noun 0.561

decet

noun 0.558

pentomino

noun 0.551

hexad

noun 0.549

tenth grade

noun 0.547

octa

noun 0.547

chiliagon

noun 0.544

tetractys

noun 0.537

five-and-ten

noun 0.534

decade counter

noun 0.532

hexagram

noun 0.532

decanate

noun 0.531

icosahedron

noun 0.529

decaborane

noun 0.528

octad

noun 0.528

dodecamer

noun 0.526

10-20

noun 0.525

polyhedron

noun 0.521

hexahedron

noun 0.521

pentangle

noun 0.512

octamer

noun 0.510

ennead

noun 0.509

tetrahedron

noun 0.507

tangram

noun 0.506

duodecimal

noun 0.506

octant

noun 0.503

teen

noun 0.503

heptad

noun 0.503