CBSE 9th Mathematics Important Questions/ Worksheet - Lines and Angles

Answer the following

1.      If an angle differs from its complement by 10°, find the angle

2.      The supplement of an angle is one third of itself. Determine the angle and its supplement.

3.      Two complementary angles are such that two times the measure of one is equal to three times measure of the other. Find the measure of the large angle.

4.      If x : y : z = 5 : 4 : 6. if XOY is a straight line find the values of x, y and z

             

5.      If  AB║DF, AD║FG, ∠BAC = 65°, ∠ACB = 55°. Find ∠FGH

             

6.      AB║ED and ∠ABC = 30°, ∠EDC = 70° then find x°

                 

7.      If lines AB, CD and EF intersect at O. Find the measures of ∠AOC, ∠DOE and ∠BOF

                                                        

8.    The angles of a triangle are (x-40°), (x-20°) and ( 1/2 x - 10°) find the value of x.

9.      In the given figure, ∠PQR = ∠PRQ, then prove that ∠PQS = ∠PRT.

 

10. Find x and y in the following figure.

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