Yes, it has to in order to be a triangle.
no it has two acute acute and two obtuse
No it has 4 acute angles
acute, obtuse and right angles
a rectangle has 4 right angles
Yes, it has to in order to be a triangle.
no it has two acute acute and two obtuse
Always 2 acute angels, and the third an be acute, right, or obtuse.
No it has 4 acute angles
acute, obtuse and right angles
None. They are all right angles.
a rectangle has 4 right angles
none all it has is right angles
Yes. They originate from Hell.
congruent right triangels
no
Neither because the 4 angles inside a square are all right angles.