Title Class 9 Mathematics Chapter 6 Lines and Angles.pdf ✅

Lines and Angles DPP-01 [Topic: Pair of Angles] Very Short Answer Type Questions 1. Find the measure of the angle which is complement of itself. 2. Find the complement of (90∘ − αα). 3. The complementary angles are in the ratio 2: 7. Find the measure of them. 4. If the measure of an angle is twice the measure of its supplementary angle, find the angle. 5. Two supplementary angles differ by 34∘ . Find the angles. 6. The complement of an angle is one-third of its supplement, find the measure of the angle. 7. An angle is equal to the five times of its supplement. Find the measure of the angle. 8. In the given figure, find xx. 9. Find xx, in the given figure. 10. In the given figure, AB is a straight line. If aa − bb = 30∘ , find aa and bb.
11. Find aa in the given figure. 12. For what value of xx + yy in the given figure will AAAAAA be a line? Short Answer Type Questions-I 13. In the given figure, AOB is a straight line. Find the measurement of ∠COD. 14. In the given figure, find the value of xx, if AOB is a line. 15. In the given figure, if AOB is a straight line, find ∠AOC, ∠BOD and ∠BOC.
16. In the given figure, POQ is a line. Ray OR is perpendicular to line PQ. OS is another ray lying between rays OP and OR. Prove that ∠ROS = 1 2 (∠QOS − ∠POS) 17. Lines PQ and RS intersect each other at O. If ∠POR: ∠ROQ = 5: 7, find all the angles aa, bb, cc and dd. 18. Lines AB, CD and EF intersect at point O. Find the values of xx, yy, zz and uu. 19. Find the angles marked by xx and yy in the given figure, such that ∠POQ = 90∘ and RS is a straight line.