Yes. You would have to have a right angle and two 45 degree angles
The definition of a circle is not part of the triangle (or tringle, even) proportionality theorem.
The three inside angles of any tringle always add up to 180 degrees.
its a paranormal place
No.
equilateral
Scalene.
5
No, and neither does a triangle.
axis
A scalene triangle.
180 degrees are in a triangle.