NCERT Exemplar Solutions
Class 7 - Mathematics - Unit 5: Lines And Angles - Multiple Choice QuestionsQuestion 13
Class 7 - Mathematics - Unit 5: Lines And Angles - Multiple Choice Questions
Question. 13
In Fig. 5.13, POR is a line. The value of a is
(a)
(a) 40°
(b)
(b) 45°
(c)
(c) 55°
(d)
(d) 60°
Detailed Answer with Explanation:
Equation: (3a+5)+(2a-25)=180. Solving gives a=40°.