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# 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 ______.

(iii) Coordinate planes divide the space into ______ octants.

**Solution:**

(i) The x-axis and y-axis taken together determine a plane known as __ XY plane__.

(ii) The coordinates of points in the XY-plane are of the form __ (x, y, 0)__.

(iii) Coordinate planes divide the space into __ eight__ octants

NCERT Solutions Class 11 Maths Chapter 12 Exercise 12.1 Question 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 ______. (iii) Coordinate planes divide the space into ______.

**Summary:**

(i) XY plane.

(ii) (x, y, 0).

(iii) eight.

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