NCERT Solutions for Class 9 Maths Chapter 6 Lines and Angles — Exercise 6.3

NCERT class 9 maths chapter 6 Lines and Angles

Question 1:In Fig. 6.39, sides QP and RQ of D PQR are produced to points S and T respectively. If Ð SPR = 135° and Ð PQT = 110°, find Ð PRQ.

Exercise 6.3 maths class 9 Chapter 6 Lines and Angles

Question 2:In Fig. 6.40, Ð X = 62°, Ð XYZ = 54°. If YO and ZO are the bisectors of Ð XYZ and Ð XZY respectively of D XYZ, find Ð OZY and Ð YOZ.

CBSE class 9 maths ncert solutions Chapter 6

Question 3:In Fig. 6.41, if AB || DE, Ð BAC = 35° and Ð CDE = 53°, find Ð DCE. Fig. 6.39 Fig. 6.40 Fig. 6.41

class 9 maths solutions Lines and Angles

Question 4:In Fig. 6.42, if lines PQ and RS intersect at point T, such that Ð PRT = 40°, Ð RPT = 95° and Ð TSQ = 75°, find Ð SQT.

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Question 5:In Fig. 6.43, if PQ ^ PS, PQ || SR, Ð SQR = 28° and Ð QRT = 65°, then find the values of x and y. Fig. 6.42 Fig. 6.43

Question 6:In Fig. 6.44, the side QR of D PQR is produced to a point S. If the bisectors of Ð PQR and Ð PRS meet at point T, then prove that Ð QTR = 1 2 Ð QPR.