NCERT Solutions Class 9 Mathematics Chapter 6 Lines and Angles Variables
Exercise 6.1 Q.1) In Fig. 6.13, lines AB and CD intersect at O. If β π΄ππΆ + β π΅ππΈ = 70Β° and β π΅ππ· = 40Β°, find β π΅ππΈ and reflex β πΆππΈ. Sol.1) Given, β π΄ππΆ + β π΅ππΈ = 70Β° and β π΅ππ· = 40Β° A/q, β π΄ππΆ + β π΅ππΈ + β πΆππΈ = 180Β° (Forms a straight line) β 70Β° + β πΆππΈ = 180Β° β β πΆππΈ = 110β¦
CBSE Class 9 Maths Lines and Angles MCQs
Question. If a ray stands on a line then the sum of the adjacent angles so formed is (a) 1000 (b) 1800 (c) 900 (d) 3600 Question. The sum of all the angles around a point is (a) 1000 (b) 1800 (c) 900 (d) 3600 Question. The sum of all the angles formed on the sameβ¦
CBSE Class 9 Mathematics Lines And Angles Notes
CBSE Class 9 Concepts for Lines and Angles. Learning the important concepts is very important for every student to get better marks in examinations. The concepts should be clear which will help in faster learning. The attached concepts made as per NCERT and CBSEβ¦