NCERT Exemplar Solutions
Class 7 - Mathematics - Unit 5: Lines And Angles - Problems and Solutions
Question 91

Question. 91

91. Amisha makes a star with the help of line segments a, b, c, d, e and f, in which a ∥ d, b ∥ e and c ∥ f. Chhaya marks an angle as 120° as shown in Fig. 5.48 and asks Amisha to find the ∠x, ∠y and ∠z. Help Amisha in finding the angles.

Answer:

∠x = 60°, ∠y = 120°, ∠z = 60°

Detailed Answer with Explanation:

By parallel line properties, corresponding and alternate angles are calculated. Thus, ∠x = 60°, ∠y = 120°, ∠z = 60°.

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