Isosceles is a 9 letter English word. It's valid Words with friends word worth 13 points.
You can make 206 anagrams from letters in isosceles (ceeilosss).
1545-55; Late Latin Greek isoskelḗs with equal legs, equivalent to iso- iso- + skél(os) leg + -ēs adj. suffix
Then ask them if they are equal-legged (isosceles) triangles.
A gaily coloured hat hung from one of the boats, and over each floated a red flag shaped like an isosceles triangle.
A similar idea, employing an isosceles linkage, was patented in 1803 by William Freemantle, an English watchmaker (fig. 14).
The angles at the base of the isosceles triangles are apt to get mixed, and to confuse us all--man and woman alike.
That the angles at the base of an isosceles triangle are equal.
So they crept up to the fire in the formation of an isosceles triangle.
And equilaterals, and isosceles triangles, and all that, scoffed Neale.
He described the island as having the form of an isosceles triangle, as may be seen upon the foregoing plan.
In an isosceles triangle the angles opposite the equal sides are equal.
I would no more attack it than I would attack an isosceles triangle, a vacuum, or Hume's "phantasm floating in a void."