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# Class 9 Math Introduction to Coordinate Geometry

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$Example 03 Show that \mathrm{A}(21) \mathrm{B}(51) and \mathrm{C}(26) are the vertices of a right angled triangle.$

2. Show that the points \mathrm{A}(-10) \mathrm{B}(10) and \mathrm{N}(0 \sqrt{3}) are not collinear.

$2. Show that the points \mathrm{A}(-10) \mathrm{B}(10) and \mathrm{N}(0 \sqrt{3}) are not collinear.$

3. Find the distance between the following pairs of points.(iii) (00)(-4-3)

$3. Find the distance between the following pairs of points.(iii) (00)(-4-3)$

ExampleUsing distance formula show that the points(ii) The above points P Q R and S(1-1) are not collinear.

$ExampleUsing distance formula show that the points(ii) The above points P Q R and S(1-1) are not collinear.$

3. Find the distance between the following pairs of points.(i) (63)(3-3)

$3. Find the distance between the following pairs of points.(i) (63)(3-3)$

1. Find the distance between the following pairs of points.(b) \mathrm{A}(2-6) \mathrm{B}(3-6)

$1. Find the distance between the following pairs of points.(b) \mathrm{A}(2-6) \mathrm{B}(3-6)$

(ii) Distance between the points (10) and (01) is(a). 0(b) 1(c) \sqrt{2} (d) 2

$(ii) Distance between the points (10) and (01) is(a). 0(b) 1(c) \sqrt{2} (d) 2$