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Easy Math · Geometry and Trigonometry · Lines, angles, and triangles · MCQ
The figure presents 5 lines labeled j, k, l, m, and n. Lines m and n are horizontal and line m lies above line n. Line j is slanted downward and to the right, and line k is slanted upward and to the right. Lines j, k, and top horizontal line m intersect, forming six angles. The angle below line m and to the left of line k and the angle below line m and to the right of line j are both labeled, a, degrees. Line k intersects the bottom horizontal line n, forming four angles. The angle above line n and to the left of line k is labeled 130 degrees. Line l is vertical and intersects lines m and n on the right side of the figure. Line j, line l, and the bottom horizontal line n intersect, forming six angles. The angle, above line n, to the left of vertical line l, and to the right of line j is labeled b degrees. There is a right angle symbol at an angle formed by horizontal line m and vertical line l.

In the figure above, lines m and n are parallel. What is the value of b ?

  1. A

    40

  2. B

    50

  3. C

    65

  4. D

    80

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id cb_question_bank:d64201b2-a2f3-47de-93b1-d6addced5e39 · question 3828f53d · IBN 08194-DC · JSON