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Quick Revision: Lines and Angles Video Lecture | Mathematics (Maths) Class 7 (Old NCERT)

FAQs on Quick Revision: Lines and Angles Video Lecture - Mathematics (Maths) Class 7 (Old NCERT)

1. What are the basic types of angles?
Ans. The basic types of angles are acute, right, obtuse, straight, and reflex angles.
2. How can you differentiate between parallel and perpendicular lines?
Ans. Parallel lines never intersect, while perpendicular lines intersect at a 90-degree angle.
3. Can two lines be both parallel and perpendicular at the same time?
Ans. No, two lines cannot be both parallel and perpendicular to each other at the same time.
4. How do you calculate the measure of an angle using a protractor?
Ans. To measure an angle using a protractor, place the center of the protractor at the vertex of the angle and align the base line of the protractor with one side of the angle. Read the degree measurement where the other side of the angle intersects the protractor.
5. What is the sum of the interior angles of a triangle?
Ans. The sum of the interior angles of a triangle is always 180 degrees.
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