Class 11 Maths NCERT Solutions Chapter 12 Introduction to 3d Geometry is developed and witten by our expert teachers. Students can study our solutions of Chapter 12 Introduction to 3d Geometry class 11 Maths, EXERCISE 12.1 1. A point is on the x-axis. What are its y-coordinate and z-coordinates? 2. A point is in the XZ-plane. What can you say about its y-coordinate? 3. Name the octants in which the following points lie: (1,. 2, 3), (4, –2, 3), (4, –2, –5), (4, 2, –5), (– 4, 2, –5), (– 4, 2, 5), (–3, –1, 6) (2, – 4, –7). 4. Fill in the blanks: (i) The x-axis and y-axis taken together determine a plane known as_______. (ii) The coordinates of points in the XY-plane are of the form _______. (ii.
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EXERCISE 12.1
1. A point is on the x-axis. What are its y-coordinate and z-coordinates?
2. A point is in the XZ-plane. What can you say about its y-coordinate?
3. Name the octants in which the following points lie:
(1,. 2, 3), (4, –2, 3), (4, –2, –5), (4, 2, –5), (– 4, 2, –5), (– 4, 2, 5),
(–3, –1, 6) (2, – 4, –7).
4. Fill in the blanks:
(i) The x-axis and y-axis taken together determine a plane known as_______.
(ii) The coordinates of points in the XY-plane are of the form _______.
(ii
