CBSE Worksheet for chapter-7 Lines and Angles class 9
Worksheet For class 9
Find CBSE Worksheet for chapter-7 Lines and Angles class 9
CLASS-9
BOARD: CBSE
Mathematic Worksheet - 7
TOPIC: Lines and Angles
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Summary
- Transversal: A line which intersects two or more given parallel lines at distinct points is called a transversal of the given lines.
- Corresponding angles: 1 & 5, 4 & 8, 2 & 6, 3 & 7 are pairs of corresponding angles.
- Alternate interior angles: 3 & 5, 2 & 8 are the pairs of alternate interior angles.
- Consecutive interior angles: 2 & 5, 3 & 8, are pairs of consecutive interior angles.
- Vertically opposite angles: in figure, 1 = 3, 2 = 4, 5 = 7 & 6 = 8.
Objective- 1
Q1. Two parallel lines have
- a common point
- two common points
- no common point
- infinite common points
Q2. An angle is 14^{o} more than its complementary angle then angle is
- 38^{o}
- 52^{o}
- 50^{o}
- None of these
Q3. X lies in the interior of BAC. If ∠BAC=70^{o}and ∠BAX=42^{o }, ∠CAX=
- 28^{0}
- 29^{0}
- 27^{0}
- 30^{0}
Q4. Two angles whose measure are a and b are such that 2a-3b=60^{0} then =?, if they form a linear pair
- 0
- 8/5
- 1/2
- 2/3
Q5. Which one of the following is correct?
- If two parallel lines are intersected by a transversal, then alternate angles are equal.
- If two parallel lines are intersected by a transversal, then sum of the interior angles on the same side of transversal is 180^{o}
- If two parallel lines are intersected by a transversal, then corresponding angles are equal
- All of these.
Objective- 2
Q1. Two supplementary angles are in ratio 4 : 5, then the angles are:
- 80°, 100°
- 70°, 110°
- 80°, 120°
- None
Q2. If an angle differs from its complement by 10°, find the larger angle.
- 45°
- 50°
- 95°
- 60°
Q3. In the given figure, OP and OQ bisect BOC and AOC respectively, then POQ is.
- 90°
- 45°
- 135°
- 180°
Q4. In the given fig if l II m, n II p and 1 = 85° then 2 is
- 95°
- 110°
- 135°
- 85°
Q5. An larger angle is 14° more than its complementary angle then angle is:
- 38°
- 52°
- 50°
- none of these
Q6. X lies in interior of ∠BAC. If ∠BAC = 70° and ∠BAX = 42° then ∠XAC = ?
- 28°
- 29°
- 27°
- 30°
Q7. If the supplement of an angle is three times its complement, then angle is:
- 40°
- 35°
- 50°
- 45°
Q8. Two angles whose measures are a & b are such that 2a – 3b = 60°, if they form a linear pair then find .
- 0
- 8/5
- 1/2
- 2/3
Q9. The supplement of an angle is one third of itself. Then the angle is:
- 135°
- 45°
- 140°
- None
Q10. In given figure, if ∠BOC = 7x + 20° and ∠COA = 3x, then the value of x for which AOB becomes a straight line.
- 15°
- 12°
- 16°
- None
Q11. In given figure if AB II DF, AD II FG ∠BAC = 65°, ∠ACB=55^{o }∠FGH is:
- 120°
- 125°
- 115°
- 140°
Q12. In given figure, AB II ED and ∠ABC = 30°, ∠EDC = 70° then x is:
- 240°
- 125°
- 260°
- None
Q13. In the given figure, if EC II AB, ∠ECD = 70° and ∠BDO = 20°, then ∠OBD is-
- 20°
- 50°
- 60°
- 70°
Q14. Given AB II CD, x° =
- 20°
- 70°
- 110°
- 35°
Q15. As shown in the figure . If point P is between these two lines such that m∠ABP = 50° and m∠CDP = 70° then find ∠BPD.
- 120°
- 70°
- 110°
- 50°
Q16. The measure of that angle which is four times its supplement is:
- 36
- 144°
- 155°
- 180°
Solutions
Objective-1
- 3
- 2
- 1
- 2
- 4
Objective-2
- 1
- 2
- 1
- 1
- 2
- 1
- 4
- 2
- 1
- 3
- 2
- 3
- 2
- 2
- 1
- 2
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