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From a fixed point outside a straight line _____ perpendicular can be drawn.

Draw a line segment $AB$, take any point $P$ and $Q$ on the line segment. Draw two perpendiculars $PM$ and $QN$ at $P$ and $Q$ on the line segment $AB$. Find if line segments $PM$ and $QN$ are parallel or intersecting.

Draw a line segment of length $4 cm$, taking this length as radius a circle is drawn. The centre of the circle is named $O$. A chord $AB$ which is not a diameter is drawn. From $O$, a perpendicular $OM$ is drawn on the chord $AB$. Measure the line segment $AM$ and $BM$ with a scale and write the conclusion derived.

I drew a line segment $XY$ with scale and pencil. Now we shall draw perpendicular bisector of line segment $XY$ with the help of scale, pencil and pencil compass. If I take a radius, less than half the length of the line segment $XY$ and try to draw an arc with centres $X$ and $Y$, on both sides, what shall I find.

I drew a line segment $XY$ with scale and pencil. Now we shall draw perpendicular bisector of line segment $XY$ with the help of scale, pencil and pencil compass. If I draw arcs with centres $X$ and $Y$ and radius equal to the length more than half the length of the line segments, what shall I observe.

Draw a line segment $AB$ of length $5 cm$ with scale and pencil. By folding paper, find the perpendicular bisector of the line segment $AB$. Then measure the two bisected parts with scale.

Draw a line segment of length $8 cm$ with scale and pencil. Then draw a perpendicular bisector of this line segment and measure each part.

Draw a line segment $PQ$ of length $6 cm$. With scale and pencil, take line segment $PQ$ as diameter and draw a circle.

With the help of scale and pencil a line segment $AB$ of length $8 cm$ is drawn. Divide the line segment $AB$ into four equal parts and measure each part.