Class 9 Lines And Angles Quiz Set 1

1. Which of the following statements is false?


2. The angles of a triangle are in the ratio 5 : 3: 7. The triangle is


3. An exterior angle of a triangle is 80° and the interior opposite angles are in the ratio 1 : 3, measure of interior opposite angles are


4. If one angle of triangle is equal to the sum of the other two, then the triangle is


5. The diagonals of the rectangle ABCD intersect at O. If ∠COD = 78°, then ∠OAB is:


6. Sum of the measure of an angle and its vertically opposite angle is always.


7. If two interior angles on the same side of a transversal intersecting two parallel lines are in the ratio 2 : 3, then the greater of the two angles is


8. Two parallel lines intersect at:


9. In a right angled triangle where angle A= 90° and AB=AC. What are the values of angle B


10. If a transversal intersects two parallel lines, then the consecutive interior angles are


11. If a side of a triangle is produced, then the exterior angle so formed is equal to the sum of the ____________ interior opposite angles.


12. Two complementary angles are such that twice the measure of the one is equal to three times the measure of the other. The larger of the two measures


13. Two angles whose sum is equal to 180° are called:


14. How many degrees are there in an angle which equals one-fifth of its supplement?


15. Two lines are parallel to each other, only when



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