If you have a triangle then one of the sides cannot be perpendicular to the other two. It is true for a square but it is impossible with a triangle.
Definition of perpendicular:
Being at right angles to the horizontal; vertical.
Chat with our AI personalities
In an isosceles triangle, one of the medians is perpendicular to the opposite side of that triangle. In an equilateral triangle, all three medians are perpendicular to the sides of that triangle.
I am sure there are several; the simplest would be a right triangle, which means, a triangle with a right angle.
Adjacent sides are perpendicular. Opposite sides are parallel.
According to the Pythagorean theorem, the square of the hypotenuse of a right triangle is equal to the sum of the squares of the other two sides or, c^2 = a^2 + b^2. Since there is no single value where a = b= c, a right triangle cannot have all equal sides.
There are no numbers on that list that could be the sides of a right triangle. Oh, all right. The following is the answer: