1 angle of 90 degrees
two sides of equal length, and a hypotenuse
2 angles (not including 90 degree one) that are equal
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a right triangle has one right angleA triangle with a right angle is a right triangle.
A triangle with 1 right angle is a right angle triangle.
A right triangle and an isosceles triangle have the fact that they are both triangles in common. A right triangle can also be an isosceles triangle.
No.The definition of an oblique triangle is "any triangle that is not a right triangle".
Not normally but if it has angles of 90, 45 and 45 degrees it is then both a right angle and an isosceles triangle