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Basics of Lines & Angles Video Lecture | The Complete SAT Course - Class 10
FAQs on Basics of Lines & Angles Video Lecture - The Complete SAT Course - Class 10
| 1. What are the different types of angles? |  |
Ans. There are several types of angles, including:
- Acute angles: These angles are less than 90 degrees.
- Obtuse angles: These angles are greater than 90 degrees but less than 180 degrees.
- Right angles: These angles measure exactly 90 degrees.
- Straight angles: These angles measure exactly 180 degrees.
- Reflex angles: These angles are greater than 180 degrees but less than 360 degrees.
| 2. What is the difference between a line and a line segment? | |
Ans. A line is a straight path that extends infinitely in both directions, whereas a line segment is a part of a line with two endpoints. A line has no length or width, while a line segment has both length and width.
| 3. How do you classify lines based on their relationship with each other? | |
Ans. Lines can be classified based on their relationship with each other as follows:
- Parallel lines: These lines never intersect and are always equidistant.
- Intersecting lines: These lines cross each other at a single point.
- Perpendicular lines: These lines intersect at a right angle (90 degrees).
- Skew lines: These lines are non-parallel and do not intersect.
| 4. 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. This is known as the Triangle Sum Theorem.
| 5. How do you calculate the measure of an angle using a protractor? | |
Ans. To measure the measure of an angle using a protractor, follow these steps:
1. Place the center point of the protractor on the vertex of the angle.
2. Align one side of the angle with the baseline of the protractor.
3. Read the measure of the angle where the other side intersects the protractor scale.
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