how many lines does an equilateral triangle have?

Answer 1

Three, All triangles have 3 sides.

For an Equilateral triangle all three sides have the same length and all three angles are also the same

Answer 2

Three lines. This is because:

From the dictionary you see the etymology of the word: "Latin triangulum, from neuter of triangulus triangular, from tri- + angulus"

So it has three angles by definition. Three angles means three vertexes with three points. Each vertex has two lines coming out of it. Each line is part of two vertexes. You can solve for the number of lines like so:

aNb^(-1) -- Where N is the number of vertexes a is the number of lines per vertex (2), and b is the number of vertexs per line (2).

2 * 3 * 2^-1 = 2^(1-1) * 3 = 2^0 * 3 = 1 * 3 = 3

Three lines we have! Now, this works for all types of triangles because are proof above was so perfect. So to prove that it works for an equilateral triangle is easy. Check to see if "triangle" is in the definition of equilateral triangle:

"A triangle in which all three sides have equal lengths"

Sure does. Therefore, you can prove that an equilateral triangle /does/ have three sides.

Hope this helps! Keep working at it! Next challenge should be how many lines a square has. Remember, the trick is that a square is a special case of the rectangle. Good Luck!

Answer 3

All triangles have 3 lines; however, an equilateral triangle have a 3 sides equal. They all have the same angle measure, 60 degree.

Answer 4

an equilateral triangle is composed of 3 sides of equal lengths

Answer 5

All triangles are made of 3 line segments.

Answer 6

Three sides, all of equal length. All triangles have three sides.

Answer 7

dont all trianlge have three lines

Answer 8

six, three sides and three angle/side bisectors.