Sometimes when its vertex angle is 90 degrees and the other 2 angles each measure 45 degrees
Never but an isosceles triangle can sometimes be a right angle triangle
Never
sometimes
Never
sometimes
Sometimes.Sometimes.Sometimes.Sometimes.
Never
A triangle can never include a right angle and an obtuse angle together in it.
sf sf sf
Sometimes similar but it depends
The perpendicular bisectors only intersect on the triangle when it is an isosceles right triangle.
Always for it to be a complete triangle with three altitudes it would have to intersect at a vertex.