Three is to triangle as eight is to octagon.
Yes
A triangle can have only three sides. No triangle can have 9 sides!
The hypotenuse of a 90-degree triangle with two nine inch sides is: 12.73 inches.
28 is a triangle number. The 28th triangle number is 406.
The third triangle number is 6.
Five faces and nine edges
A nine point circle is constructed by starting off with a triangle. Draw 10 points on the triangle any equal distance from each other, and connect.
The fifth triangle number, known as T5 is 15.
No. Triangle numbers are a fixed set of numbers that can't be altered to make one certain number turn into a triangle number.
There are many possible solids. A triangle based prism, or a triangle based dipyramid are two examples.
A nonagon has nine sides, and a triangle has three, so altogether they have 12 sides.