FSc Part 2 Mathematics Chapter 4 Short Questions Preparation

Define in-centre of a triangle.

• Ans 1: The point of intersection of the internal bisectors of the angles of the triangle is called its in-centre.

Define ortho-centre of a triangle.

• Ans 1: The ortho-centre of a triangle is the point of intersection of the lines through the vertices and perpendicular to the opposite sides (altitudes) of the triangle.

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Define circum-centre of a triangle.

• Ans 1: The point of intersection of the perpendicular bisectors of the sides of a triangle is called its circum-centre.

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Define in-centre of a triangle.

• Ans 1: The point of intersection of the internal bisectors of the angles of the triangle is called its in-centre.

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The xy-coordinate axes are translated through the point O' (4, 6). The coordinates of the point P are (2, -3) referred to new axes. Find the coordinates of P referred to the original axes.

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What is slope or gradient of a line ?

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