Teacher's Resources

14. Practical Geometry

Click the correct answer (True & False).

An angle of 85° cannot be constructed using a ruler and compass.

True

False

Using the two set squares present in the geometry box, an angle of 75° can be drawn.

True

False

Concentric circles have equal radii.

True

False

There is only one line of symmetry in a 30°–60°–90° set square.

True

False

The perpendicular to a line from a given point not on it can be obtained by paper folding technique.

True

False

Infinitely many perpendiculars can be drawn to a given ray.

True

False

Click the correct answer.

Which instrument is used to construct a circle?

Ruler

Compass

Eraser

Divider

How many perpendiculars can be drawn from a point not on the line?

Infinite

Where does the perpendicular bisector of a line segment measuring 8 cm cuts it?

At its end point

At 2 cm from one end

At 4 cm from one end

At 6 cm from one end

How can we construct an angle measuring 22.5° using a ruler and compass only?

By bisecting 90° twice

By bisecting 45° twice

By doubling 11°

By bisecting 90° once

Which of the following angles cannot be constructed using a ruler and compass only?

15°

40°

105°

120°

Which of the following can be drawn using a ruler and pair of set squares?

A perpendicular line

A parallel line

An angle of 60°

All of these

Which of the following angles cannot be constructed using a ruler and compass?

75°

15°

135°

85°

Click the correct answer.

If image of points A and B in the line l are P and Q respectively then PQ is equal to .

To bisect a line segment of length 6 cm, the opening of the compass should not be less than .

2 cm

3 cm

3.5 cm

If an angle of measure 60° is bisected twice, the angle so obtained measures .

30°

15°

20°

The number of perpendicular bisectors a segment can have is .

There are in a protractor for measuring the angles.

two scales

one scale

three scales

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