Page 263 - Start Up Mathematics_6

P

2. Keeping the ruler firm, place the set square
above the ruler such that the right-angled
vertex is in contact with the ruler. l

3. Slide the set square along the edge of the P
ruler until its vertical edge touches the given
point P.
l

4. Draw a perpendicular line along the vertical P
edge of the set square passing through P to
meet line l at Q.

l
Q

Using a ruler and compass

1. With P as the centre and some convenient
radius, draw an arc intersecting line l at two P
points A and B.

l
A B

2. Using the same radius with A and B as centres, P
construct two arcs that intersect at a point,
say Q on the side opposite to P.
l
A B

Q

P

3. Join P and Q to obtain the required
perpendicular. l

Q

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