Question

Draw a line segment PQ =7cm . and Take a point R such that PR=3.9cm . Draw a perpendicular from point R on PQ​

Answer 1

Refer to the image attached below and the instructions to find out how to draw a perpendicular line.

• Using a ruler draw a line segment PQ such that it is 7cm.
• After that mark out a point on the line R and measure it so that PR is 3.9cm.
• Using a compass, place the point on R and draw two points on the line and mark them as A and B.
• Move your pointer to A and adjust it to be a little bit more than half of AB.
• Make a marking on the top of point R outside the line.
• Repeat the same process for point B.
• Once you have achieved an intersection above point R join it to point R.
• With that, you have constructed a perpendicular line on point R.

NOTE: When making the markings on A and B do not change the size of the compass. The same applies when making the markings above point R.

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