हिंदी में जवाब दो: Classify each of the following angles as acute, right, obtuse, straight or reflex: 45°, 90°, 135°, 180° and 200°.

Answer: The classifications are as follows: 45∘45^\circ is an acute angle, 90∘90^\circ is a right angle, 135∘135^\circ is an obtuse angle, 180∘180^\circ is a straight angle, and 200∘200^\circ is a reflex angle.

Step-by-step solution

Step 1: Define Angle Types

Before classifying the given angles, let's recall the definitions of different types of angles. An acute angle is less than 90 degrees, a right angle is exactly 90 degrees, an obtuse angle is between 90 and 180 degrees, a straight angle is exactly 180 degrees, and a reflex angle is greater than 180 degrees but less than 360 degrees.

Step 2: Classify 45°

The angle 45∘45^\circ is greater than 0∘0^\circ and less than 90∘90^\circ. Therefore, it is an acute angle.

Step 3: Classify 90°

The angle 90∘90^\circ is exactly equal to 90∘90^\circ. Therefore, it is a right angle.

Step 4: Classify 135°

The angle 135∘135^\circ is greater than 90∘90^\circ and less than 180∘180^\circ. Therefore, it is an obtuse angle.

Step 5: Classify 180°

The angle 180∘180^\circ is exactly equal to 180∘180^\circ. Therefore, it is a straight angle.

Step 6: Classify 200°

The angle 200∘200^\circ is greater than 180∘180^\circ and less than 360∘360^\circ. Therefore, it is a reflex angle.

More from this chapter

All Lines and Angles solutions →

Solve your own maths question free →