Introduction to Three Dimensional Geometry — Important Questions
CBSE · Class 11 · Mathematics
162 important questions from Introduction to Three Dimensional Geometry for CBSE Class 11 Mathematics, with answers.
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Important Questions from Introduction to Three Dimensional Geometry
The distance formula between two points P(x1, y1, z1) and Q(x2, y2, z2) is:
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√[(x2-x1)² + (y2-y1)² + (z2-z1)²]
This formula calculates the Euclidean distance between two points in three-dimensional space by using the Pythagorean theorem.
In which octant are coordinates (-, -, +) located?
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VII
The signs [0;31m(-, -, +)[0m mean x is negative, y is negative, and z is positive. From the sign pattern of the octants, this corresponds to octant VII. The octant is determined by the signs of the coordinates.
What is the coordinate of a point on the YZ-plane?
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(0, y, z)
Points on the YZ-plane have an x-coordinate of zero, with varying y and z coordinates.
The line Z'OZ represents:
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Z-axis
Z'OZ is the vertical line representing the z-axis in a three-dimensional coordinate system.
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Sources & Official References
- NCERT Official — ncert.nic.in
- CBSE Academic — cbseacademic.nic.in
- CBSE Official — cbse.gov.in
- National Education Policy 2020 — education.gov.in
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
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