Different triangles

Today we've learn't about right angles, acute angles, obtuse angles, and an reflex angle. I learn't that a right angle is 90 degrees, and an acute angle is less than 90 degrees, if it's more than 90 degrees then it's a obtuse angle. If it goes pass 180 degrees than it's considered a reflex angle. I also learn't about the different triangles, like an Isosceles triangle or a scalene triangle. An Isosceles triangle has only two angles and two equal sides. A scalene triangle has no equal sides nor angles.