## NCERT Solutions for Class 7 Maths Chapter 5 Lines and Angles Exercise 5.2 - FREE PDF Download

## FAQs on NCERT Solutions for Class 7 Maths Chapter 5 - Lines and Angles Exercise 5.2

1. What are complementary and supplementary angles in class 7 exercise 5.2?

Complementary angles are two angles whose sum is 90 degrees. For example, if one angle is 30 degrees, the other must be 60 degrees to be complementary. Supplementary angles are two angles whose sum is 180 degrees. For example, if one angle is 110 degrees, the other must be 70 degrees to be supplementary.

2. What are vertically opposite angles?

Vertically opposite angles are the angles opposite each other when two lines intersect. These angles are always equal. For example, if two lines intersect and form angles of 70 degrees and 110 degrees, the vertically opposite angles will also be 70 degrees and 110 degrees respectively.

3. How can we identify alternate interior angles?

Alternate interior angles are the pairs of angles formed on opposite sides of a transversal, but inside the two lines it intersects. These angles are equal when the lines are parallel. For instance, if two parallel lines are cut by a transversal, the angles on the inside, but on opposite sides of the transversal, are alternate interior angles.

4. What are corresponding angles?

Corresponding angles are the angles that occupy the same relative position at each intersection where a transversal crosses two lines. If the two lines are parallel, corresponding angles are equal. For example, if a transversal cuts across two parallel lines, each angle in one line corresponds to an angle in the same position in the other line.

5. What do you mean by the Corresponding angle in class 7 maths?

The angles created when a transversal intersects two parallel lines are known as corresponding angles. According to the corresponding angle postulate, if a transversal intersects two parallel lines, the corresponding angles must be congruent. In other words, the corresponding angles will always be equal if a transversal intersects two parallel lines. Typical examples of equivalent angles include opening and closing a lunchbox, resolving a Rubik's cube, and creating endless parallel railroad tracks.