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Ans.
All are positive. So octant is XOYZ
X is negative and rest are positive, so octant is X’OYZ
Y is negative and rest are positive, so octant is XOY’Z
Z is negative and rest are positive, so octant is XOYZ’
X and Y are negative and Z is positive, so octant is X'OY'Z
All are negative, so octant is X’OY’Z’
Y and Z are negative, so octant is XOY’Z’
X and Z are negative, so octant is X’OYZ’
YZ plane is x-axis, so sign of x will be changed. So answer is (2, 3, 4)
XZ plane is y-axis, so sign of y will be changed. So answer is (-5, -4, -3)
XY-plane is z-axis, so sign of Z will change. SO answer is (5, 2, 7)
XZ plane is y-axis, so sign of Y will change, So answer is (-5. 0. 3)
XY plane is Z-axis, so sign of Z will change So Answer is (-4, 0, 0)
Vertices of cube are
(1, 0, -1) (1, 0, 4) (1, -5, -1)
(1, -5, 4)(-4, 0, -1)(-4, -5, -4)
(-4, -5, -1) (4, 0, 4)(1, 0, 4)
3 – (-2) = 5, |0, -5| = =5,| – 1 – 4| = 5
5, 5, 5 are lengths of edges
5 – 3 = 2, 0 – (- 2) = 2, 5 – 2 = 3
2, 2, 3 are lengths of edges.
(-3, -2, -5) (-3, -2, 5) (3, -2. -5) (-3, 2, -5) (3, 2, 5) (3, 2, -5) (-3, 2, 5)
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Chapter 28: Introduction to 3D coordinate geometry...