Give two examples each of right, acute and obtuse angles from your environment.

Right Angle -An angle whose measure is $90°$- Corners of a wall, Four edges of a Television

Acute angle - An angle whose measure is more than $0°$but less than $90°$- Angle formed by the hands of a clock at 2 o'clock, a slice of pizza

Obtuse angle- An angle whose measure is more than $90°$but less than $180°$-Angles formed by the blades of a ceiling fan, the angle formed by the hands of a clock at 4 o'clock