12.
This is because you add the numbers and then divide by the amount of numbers to get an average. So here we add the numbers and divide the total by 3.
10+11+15 = 36.
36/3 = 12.
A triangle with all sides the same lenght is an equilateral triangle.
Isosceles Triangle (:
12
No, a rhombus has 4 sides of equal lenght, a triangle has only 3 sides.
an icosilies triangle is a triangle wich only has 2 sides the same lenght but 1 is not the same length
A regular hexagon
An equilateral triangle.
The sides of a triangle add up to the perimeter.
An equilateral triangle. Since the angles are automatically congruent, it could also be called regular.
An equilateral triangle has three equal sides. The angles of an equilateral triangle measure 60 degrees each, but the sides can be any length.
The pathagoren theorm states that a2+ b2 = c2. If you put your lenghts into the equation and it comes out true (100=100), then the triangle is a right trianlge. If it is a false equation (100=30), then it is not a right triangle. Where a = lenght of leg 1, b = lenght of leg 2, and c = lenght of hypotenuse.
is the perimeter of the triangle whose sides measure 7.5 7.1 and 8.1