1, 3, 6, 10 and 15 are triangle numbers.
The furrow shape is triangle for heavy duty and double heart tines, while it is triangle plus trapezoidal shape for double heart with wings and duck foot tines.
Say the word "Bermuda" and the first word that comes to most peoples' minds is "triangle".
— but to me sex is sex, and triangles are triangles".
There are triangles, squares, full circles, semicircles, open angles, crosses and groups of dots.
The simplest polygons are triangles (three sides), quadrilaterals (four sides), and pentagons (five sides).
The elements are triangles with piecewise linear basis functions.
For example, one must prove that triangles exist, e.g., that some [constructible] figures are triangles.
A domain is discretized into elements, which may be triangles, quadrilaterals, tetrahedron, or hexahedron.
This attribute belongs to all equilateral triangles as well not, however, because they are equilateral, but because they are triangles.
The only exceptions are triangles: they collapse without transforming into a polygon.
