NCERT Exemplar Solutions
Class 7 - Mathematics - Unit 5: Lines And Angles - Problems and SolutionsQuestion 88
Class 7 - Mathematics - Unit 5: Lines And Angles - Problems and Solutions
Question. 88
88. A road crosses a railway line at an angle of 30° as shown in Fig. 5.45. Find the values of a, b and c.
Answer:
a = 30°, b = 150°, c = 150°
Detailed Answer with Explanation:
By alternate and corresponding angle properties, a = 30°. Adjacent supplementary angles give b = 180 − 30 = 150° and c = 150°.