Yes and the dimensions given would form a scalene triangle.
A triangle with the above dimensions would be a right angled triangle.
No because the given dimensions would not form a triangle.
That is the definition of a triangle. If it did not have three sides it would not be a triangle. If it did not have three angles, it would not be a triangle.
No because the given dimensions would form an equilateral triangle
Yes the given dimensions would form a right angle triangle.
A hologram is an image that seems like it exists in three dimensions. Currently, the only real holograms are laser sketched images that appear to pop out of a picture. The science fiction version of a hologram is a complete 3D image that exists completely by itself with no back. Unfortunately, this is not possible because there would be nothing to stop the light particles to place them according to three dimensions.
No but the dimensions would be applicable to an isosceles triangle
Yes the dimensions given would make a right angle triangle
Area = 0.5*base*height Note that the given dimensions would not form a triangle
No and the given dimensions would not form any kind of a triangle
If both dimensions are doubled then the area is quadrupled. This is true of any geometric shape.