A right angle is a perfect 90 degree angle
This is a right triangle because it has a perfect 90 degree angle. It can only have 1 right angle.
Acute angles are less than a right angle.
To be an acute triangle you must have all 3 angles acute.
What's a obtuse angle? An obtuse angle is an angle bigger than 90 degrees.
What is an obtuse triangle? A triangle with 1 obtuse angle is called an obtuse triangle.
What angleis less than 90 degrees?
This is a acute triangle.
Now that is a acute triangle.
This diamond is an obtuse angle and an obtuse triangle.
Bye thanks for learning