Yes
90 degrees
A right triangle.
A right angle triangle can only have one right angle of 90 degrees
90 degrees
Triangles measure 180 degrees. A triangle that has one 90 degree angle is known as a right triangle.
Right angled triangle
A right triangle.
The third angle must be 90 degrees so it's a right-angled triangle
NO
90 degrees
It is 90 degrees
A right triangle. Also an isosceles triangle.