A right angle triangle is a plane figure not a 3d one.
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What's a right angle triangle
There is none because a triangle is a 2D shape and volume measures 3D shapes ----------------------------------------------------------------- There is not one. Triangles are two dimensional, volume is three dimensional, a triangle can therefore have an area but not a volume.
it is same as surface and volume ! a plane angle is 2D and solid angle is 3D
It depends on the axis around which the triangle is rotated to generate the 3-d version. If rotated about the hypotenuse, you would get a circular wedge. If either of the other sides, you would get a cone.
A triangle is a 2 dimensional object, it cannot therefore have a volume (which is a property of 3D objects.However, if you meant area, then it's half the base length multiplied by the height.