CBSE Class 7 > Class 7 Videos > "Lines and Angles" Chapter 5 - Introduction - NCERT Class 7th Maths
"Lines and Angles" Chapter 5 - Introduction - NCERT Class 7th Maths Video
FAQs on "Lines and Angles" Chapter 5 - Introduction - NCERT Class 7th Maths
| 1. What are lines and angles? |  |
Ans. Lines are straight, continuous paths that extend infinitely in both directions. Angles are formed when two lines or rays meet at a common endpoint. They can be measured in degrees.
| 2. What is the difference between a line and a line segment? | |
Ans. A line is a straight, continuous path that extends infinitely in both directions, while a line segment is a part of a line that has two endpoints and a definite length.
| 3. How are angles classified? | |
Ans. Angles can be classified based on their measure. They can be acute (less than 90 degrees), right (exactly 90 degrees), obtuse (between 90 and 180 degrees), or straight (exactly 180 degrees).
| 4. What are complementary angles? | |
Ans. Complementary angles are a pair of angles that add up to 90 degrees. When two angles are complementary, one angle is the complement of the other.
| 5. How can we determine if two lines are parallel? | |
Ans. Two lines are parallel if they never intersect and always maintain the same distance between each other. This can be determined by observing if the corresponding angles formed by a transversal (a line that intersects two or more lines) are equal.
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Apr 18, 2026 Last updated
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