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Introduction to Three Dimensional Geometry

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4 months ago

Introduction to Three Dimensional Geometry Class 11th

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).
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Payal Gupta

Contributor-Level 10

3. 

 

Octants

 

I

II

III

IV

V

VI

VII

VIII

coordinates

x

+

–

+

–

+

y

+

–

+

–

–

z

+

–

–

(1, 2, 3) lies in octant I.

(4, –2, 3) lies in octant IV.

(4, –2, –5) lies in octant VIII.

(4, 2, –5) lies in octant V.

(–4, 2, –5) lies in octant VI.

(–4, 2, 5) lies in octant II.

(–3, –1, 6) lies in octant III.

(–2, –4, –7) lies in octant VII.

New answer posted

4 months ago

Introduction to Three Dimensional Geometry Class 11th

2. A point is in the XZ-plane. What can you say about its y-coordinate?
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Payal Gupta

Contributor-Level 10

2. When a point lies on XZ-plane, its y-coordinate is zero.

New answer posted

4 months ago

Introduction to Three Dimensional Geometry Class 11th

Class 11 Math Three Dimensional Geometry Exercise 11.1 NCERT Solution

1. A point is on the x-axis. What are its y-coordinate and z-coordinates?
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Payal Gupta

Contributor-Level 10

1. When a point lies on x-axis, its y-coordinate and z-coordinate are zero.

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