WORKSHEET-16: Angles and Their Types Practice for NVS Entrance Exam (Class 6)

📘 Math Worksheet

 Topic: Angles (कोण) and Their Types

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What is an Angle? (कोण क्या होता है?)

When two lines meet at a point, they form an angle.
जब दो रेखाएँ किसी बिंदु पर मिलती हैं, तो वे एक कोण बनाती हैं।

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Types of Angles (कोणों के प्रकार):

1. Acute Angle ( न्यून  कोण):
   An angle less than 90°
   90 डिग्री से छोटा कोण

2. Right Angle (समकोण):
   Exactly 90°
   ठीक 90 डिग्री का कोण

3. Obtuse Angle (अधिक कोण):

   Greater than 90° but less than 180°
   90 डिग्री से बड़ा लेकिन 180 डिग्री से छोटा कोण

4. Straight Angle (सरल कोण):

   Exactly 180°
   ठीक 180 डिग्री का कोण

5. Reflex Angle (प्रतिवर्ती कोण):

   Greater than 180° but less than 360°
   180 डिग्री से बड़ा लेकिन 360 डिग्री से छोटा कोण

6. Complete Angle (पूर्ण कोण):

   Exactly 360°
   ठीक 360 डिग्री का कोण

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Exercise Section (अभ्यास):

Section A: Fill in the blanks:

1. An angle of 90° is called a ________ angle.

2. ________ angle is more than 180° but less than 360°.

3. An acute angle is always ________ than a right angle.

4. 360° is called a ________ angle.

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Section B: Multiple Choice Questions (MCQs)

Q1: Which of the following is a right angle?
a) 45°
b) 90°
c) 120°
d) 180°

Q2: An angle more than 90° but less than 180° is called:
a) Acute angle
b) Straight angle
c) Obtuse angle
d) Reflex angle

Q3: 360° angle is called:
a) Right angle
b) Reflex angle
c) Complete angle
d) Straight angle

Q4: Which one is an acute angle?
a) 100°
b) 45°
c) 180°
d) 270°

प्रश्न 5: A straight angle measures:
a) 90°
b) 180°
c) 270°
d) 360°

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Section C: True or False (सही या गलत)

1. A right angle is exactly 90°.

2. A 220° angle is a straight angle.

3. 45° is a reflex angle.

4. 360° is called a complete angle.

5. An acute angle is less than 90°.

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Section D: Answer the Following

Angle	Type
180°
75°
90°
45°
240°
360°