But 1 ad 14 is parallel to m.b. In Figure 9, 15, 4-76。[Vertically opposite angles]194 7694170 180Since, the lines / and m are intersected by the transversal n such that the sum of interiorangles on the same side of the transversal is not 180°.I is not parallel to m.EXERCISE 91. State the property used in each of the following to make the statement truei. If Illn, then 1.3 = <7.2i If 23 45, then lllm.ii If 23+ 6 1800, then /l m.In Figure 2, find the values of 46 and 27, given that m n and 41 115°63. In Figure 3, AB|| CD. EF intersects them at P and Q, respectively.Fig. 1If 41 130°, find all the other angles.

But 1 ad 14 is parallel to m.b. In Figure 9, 15, 4-76。[Vertically op

1.	But 1 ad 14 is parallel to m.b. In Figure 9, 15, 4-76。[Vertically opposite angles]194 7694170 180Since, the lines / and m are intersected by the transversal n such that the sum of interiorangles on the same side of the transversal is not 180°.I is not parallel to m.EXERCISE 91. State the property used in each of the following to make the statement truei. If Illn, then 1.3 = <7.2i If 23 45, then lllm.ii If 23+ 6 1800, then /l m.In Figure 2, find the values of 46 and 27, given that m n and 41 115°63. In Figure 3, AB\|\| CD. EF intersects them at P and Q, respectively.Fig. 1If 41 130°, find all the other angles.
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