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How many distinct equilateral triangles with a perimeter of 60 units have integer side lengths?
There is only one equilateral triangle with a perimeter of 60 units. Its side lengths are integers.
How many 1 inch triangles are needed to make a row of triangles that has a perimeter of 20 inches?
If a "1 inch triangle" means a triangle each of whose sides is 1 inch, then there is no answer to the question. These are equilateral triangles and equilateral triangles can tesselate to form a larger equilateral triangle. The fact that the large triangle is equilateral means that its three sides are equal so that its perimeter ie the sum of the three sides must be divisible by 3. 20 is not divisible by 3.
Some equilateral triangles are not isosceles?
All isosceles triangles are not equilateral triangles
Are some isosceles triangles equilateral triangles?
All isosceles triangles are not equilateral triangles
What is the perimeter of an equilateral triangle that measures 15 feet on one side?
Equilateral triangles have all sides the same length, and to get the perimeter, you add all the side lengths. 15+15+15=45
Are all equilateral triangles acute triangles?
Yes all equilateral triangles are acute triangles, but not all acute triangle are equilateral triangles.
Are Triangles equilateral triangles?
Triangles are equilateral triangles only when all of their 3 sides are equal in lengths.
Are all equilateral triangles also isoscelles triangles?
Yes. But not all isosceles triangles are equilateral.
Are some right triangles have equilateral triangles?
No. For it to be equilateral it can't be a right triangle.
What is the perimeter of an equilateral triangle with an altitude of 15?
An equilateral triangle has 3 equal interior angles each of 60 degrees. There are two right angled triangles in an equilateral triangle. So we can use trigonometry to find the length of one side of the equilateral triangle then multiply this by 3 to find its perimeter. Hypotenuse (which is one side of the equilateral) = 15/sin 60 degrees = 17.32050808 17.32050808 x 3 = 51.96152423 Perimeter = 51.96152423 units.
Are equilateral triangle are acute?
Yes all equilateral triangles are acute triangles, but not all acute triangle are equilateral triangles.
Two equilateral triangles are sometimes similar?
Two equilateral triangles are always similar!
