The angle that isometric lines make with each other is
A. 90°
B. 60°
C. 120°
D. 45°
Please scroll down to see the correct answer and solution guide.
Right Answer is: C
SOLUTION
1. Isometric axes: The three lines CB, CD and CG, meeting at point C and inclined at an angle of 120° with each other, are called isometric axes.
2. Isometric lines: The lines parallel to the isometric axes i.e. inclined at an angle of 120° with each other, are called isometric lines. Here lines AB, BF, FG, GH, DH and AD are isometric lines.
3. Non-isometric lines: The lines which are not parallel to isometric axes are known as non-isometric lines. Here diagonals BD, AC, CF, BG, etc., are non-isometric lines.
4. Isometric plane: The plane representing any face of the cube as well as another plane parallel to it is called an isometric plane. Here, ABCD, BCGF, CGHD, etc., are isometric planes.
5. Non-isometric plane: The plane which is not parallel to isometric planes are known as non-isometric planes. Here, the plane ABGH, CDEF, AFH, CFH, etc., are non-isometric planes.
6. Isometric scale: It is the scale which is used to convert the true length into isometric length. Mathematically, Isometric length = 0.816 × True length
