Acute Angle: 1 Mark
Right Angle: 1 Mark
Obtuse Angle: 1 Mark
Depending on the magnitude, angles are classified as:
(i) Acute Angle: If the value of an angle is greater than 0∘ but less than 90∘, it's called an Acute Angle.
(ii) Right Angle: When the value of an angle is exactly 90∘, it is called a Right Angle.
(iii) Obtuse Angle: An Obtuse angle is one whose value is greater than 90∘ but less than 180∘