Draw a perpendicular to l through P, using (i) set squares (ii) Protractor (iii) ruler and compasses. How many such perpendiculars are you able to draw?

Draw a perpendicular from P to line m, using (i) set squares (ii) Protractor (iii) ruler and compasses. How many such perpendiculars are you able to draw?

Draw a line AB. Using a compass, draw a line perpendicular to AB at the point B.

Draw an angle of 140^(@) with the help of a protractor and bisect it using ruler and compasses.

Draw a line segment of length 7cm. Draw its perpendicular bisector, using ruler and compasses.

Calculate moment of inertia of a uniform circular disc of mass 700 g and diameter 20 cm about (i) an axis through the centre of disc and perpendicular to its plane, (ii) a diameter of disc, (iii) a tangent in the plane of the disc, (iv) a tangent perpendicular to the plane of the disc.

Study the diagram. The line l is perpendicular to line m (a) Is CE = EG (b) Does PE bisect CG = (c) Identify any two line segments for which PE is the perpendicular bisector. (d) Are these true? (i) A C > E G (ii) C D = G H (iii) B C < E H

Choose the correct option: (i) A surface on which the wave disturbance in same phase at all points is called a wavefront. (ii) The direction of a wave at a point is perpendicular to the wavefront through that point. (iii) The wavefronts of a wave originating from a point source is spherical. The wavefronts for a wave going along a fixed direction are planes perpendicular to that direction.

Draw a line l and a point X on it. Through X, draw a line segment bar(XY) perpendicular to l. Now draw a perpendicular to bar(XY). at Y. (use ruler and compasses)

Draw a circle of radius 6cm using ruler and compasses. Draw one of its diameters. Draw the perpendicular bisector of this diameter. Does this perpendicular bisector contain another diameter of the circle?

Draw a circle of radius 3 cm. Mark a point P on the circle. Draw tangent to the circle through point P using the centre of the circle Analysis A circle of radius 3 cm can be drawn. Let the cemntre of the given circle be O and line l be the required tangent We know, converse of tangent theorem states that , 'A line perpendicular to radius at its outer end is tangent . therefore We construct perpendicular to radius OP at point, then line l is the required tangent .