Straight or right? If you mean straight, then it's kind of debatable. Since straight angles are lines, then you could argue that yes, there are an infinite number of straight angles in the lines of a triangle. However, you can't have a vertex of 180 degrees because all three vertices of the triangle have to add up to 180. If you mean right, then yes, it can; it's known as a right triangle and they're really common.
no
180-interior angle = exterior angle
Possibly you mean a 'right angle', which is 90 degrees, like the inside corner of a square. I have never heard of a 'stright angle'.
Yes. You would have to have a right angle and two 45 degree angles
Possibly you mean a 'right angle', which is 90 degrees, like the inside corner of a square. I have never heard of a 'stright angle'.
"it's complicated"
2 of them.
Yes
stright angle? 180 degrees
Yes providing that the other 2 angles are acute
Right angle (90) Acute angle (<90) Obtuse angle (>90) Straight angle (180) Reflex angle (>180)
what statement about the two angles in a right tringle that do not measure 90 is true