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.
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:
An obtuse triangle is a triangle with one angle greater than 90 degrees. Since a perpendicular side is a side that forms a right angle with another side, an obtuse triangle can have 0 perpendicular sides if all its angles are obtuse. However, it can also have 1 perpendicular side if one of its angles is a right angle.
all the sides
right angled triangle does not have all equal sides
The point where the perpendicular bisectors of the sides of a triangle intersect is called the circumcenter. This point is equidistant from all three vertices of the triangle and serves as the center of the circumcircle, which is the circle that passes through all the vertices of the triangle.
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.
Two of the three lines in a right triangle are perpendicular. Perpendicular lines meet at a 90 degree angle (also called a right angle). All right angle triangles have one right angle.
It has 2 equal sides of right triangle.
centroid
A square has four perpendicular sides.
A right triangle.
A triangle with a right angle and different lengths for sides is a right, scalene triangle.
It is the right angle triangle which has 3 sides whereas all quadrilaterals have 4 sides.