Draw any two acute and two obtuse angles of your choice.

Classify the following angles into acute, right, obtuse and straight angles.

$40°, 140°, 90°, 210°, 44°, 215°, 345°, 125°, 10°, 120°, 89°, 270°, 30°, 115°, 180°$

An angle smaller than right angle is acute angle.

At $9 \text{'}O\text{'}$ clock in the morning.

At $6 \text{'}O\text{'}$ clock in the evening