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c ED  AB; Find m∠EDC. [Given x = 70 and y = 60] c

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c If line l  line m and b = 120, then find the value of y. c

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c A line is parallel to its image under reflection by a mirror. The angle at which the line is inclined to the mirror is c

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c Six parallel lines are intersected by two lines. How many triangles can be formed? c

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c There are 9 parallel lines. The distance between the first 5 consecutive lines is 2 cm each, that between the next lines is 3 cm each. What is the distance between the first and the ninth line in cm? c

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c How many lines parallel to a given line can be drawn through a given point out side the line? c

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c If two lines are perpendicular to the same line in a plane, then the lines are c

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c How many lines perpendicular to a given line can be drawn through a given point outside the line? c

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c In a plane, if two lines are parallel to a third line, then they are c

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c Are parallel lines useful in finding angle measures in triangles? c

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c ED  AB; Find m∠EDC. [Given x = 75 and y = 65] c

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c If line l  line m and b = 110, then find the value of y. c

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c Two plane mirrors r and s are parallel to each other. If m∠ABK = 30, then find m∠DCB. c

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c What is the most appropriate description for the figure ABCD if ∠A = ∠B ? c

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c What is the most appropriate name for the figure ABCD if ∠ B = ∠ D and AB = BC? c

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c How many perpendicular lines can be drawn from a fixed point to 5 lines which are parallel to each other? c

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c Two right triangles are placed such that one of its legs is horizontal. How many pairs of parallel sides can be there for these triangles? c

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c Choose the line which is inclined to 4y + 7x + 13 = 0. c

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c Identify the correct statement / statements. 1. Lines lying on different planes can be parallel. 2. Parallel lines have only one point of intersection. 3. Parallel lines have same slope. 4. Parallel lines have many ponts of intersection. c

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c If AB¯  CD¯, PR¯  QS¯, m∠CQP = x and m∠SQD = y, then find m∠EPR. c

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c Which theorem would you use to show that a  b? c

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c Which theorem can you use to prove that l is parallel to m? c

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