A scalene triangle which has different side lengths
It is a scalene triangle
It depends on what kind of triangle.
Any kind of triangle can be made in a rectangle.
The kind of triangle with two sides the same length is an isosceles triangle.
a scalene triangle
right angle triangle
The Penrose triangle.
45 degrees is an angle, not a triangle.A triangle containing an angle of 45 degrees can be any kind of triangle except an equilateral triangle.
It doesn't ever fall outside of a triangle.
Either a scalene triangle or an isosceles triangle.
An equilateral triangle.
An isosceles triangle.