They are polygons which means many sides
Unless it is a right isosceles triangle, a normal right triangle has no pairs of equal sides.
It has 2 equal sides of right triangle.
A right triangle can have at most 2 congruent sides, but may have no congruent sides. From the Pythagorean Theorem, the square of the hypotenuse will be equal to the sum of the squares of the other two sides - consequently the "other two sides must each be less than the length of the hypotenuse and thus not congruent with it. They can be congruent with each other however - which is what occurs in a 45°/45°/90° triangle (for any other right triangle, none of the sides will be congruent).
If its in the form of an isosceles right angle triangle then it will have 2 equal sides.
They are polygons which means many sides
Any triangle has three sides, whether it is a right triangle or not.
Unless it is a right isosceles triangle, a normal right triangle has no pairs of equal sides.
It has 2 equal sides of right triangle.
A right triangle can have at most 2 congruent sides, but may have no congruent sides. From the Pythagorean Theorem, the square of the hypotenuse will be equal to the sum of the squares of the other two sides - consequently the "other two sides must each be less than the length of the hypotenuse and thus not congruent with it. They can be congruent with each other however - which is what occurs in a 45°/45°/90° triangle (for any other right triangle, none of the sides will be congruent).
If its in the form of an isosceles right angle triangle then it will have 2 equal sides.
There are three sides.
A right angle triangle has no parallel sides
A right angle triangle has no parallel sides
All triangles have three sides. If it doesn't have three sides, it's not a triangle.
Oh geez think about it. It needs three sides to be a triangle right?
In Euclidean geometry, 180. Other answers are possible, depending on the surface on which the triangle is drawn.