Tools of Construction

Q.

List the name of things of triangular shaped object.

Q.

There are two 'set-squares' in your box. What are the measures of the angles that are formed at their corners? Do they have any angle measure that is common?

Q. Which of the following angles cannot be constructed using set squares?

1. $90°$
2. $75°$
3. $50°$
4. $30°$

Q.

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

1. ${30}^{\circ }$

2. ${15}^{\circ }$

3. ${45}^{\circ }$

4. ${100}^{\circ }$

Q.

Which of the following methods is the best way to compare the lengths of two line segments?

1. None of these

2. Comparison by observation

3. Comparison by tracing, using a tracing paper

4. Comparison using a ruler and divider

Q.

Question 8

Out of the given four options, only one is correct. Write the correct answer.

The instrument to measure an angle is a

(a) ruler (b) protractor (c) divider (d) compass

Q.

Which of the following can be used to construct an angle equal to ${60}^{\circ }?$

1. Protractor, Ruler

2. Compass, Ruler

3. Set Square (30º-60º-90º)

4. Set Square (45º-45º-90º)

Q.

Question 27

Fill in the blanks to make the statements true.

The common properties in the two set squares of a geometry box are that they have a ___ angle and they are of the shape of a ___.

Q. Name the geometrical instrument having a pair of pointers.

1. Protractor
2. Divider
3. Set squares
4. Compasses

Q. How to measure a line ?

Q. is known as the father of Geometry.

1. Archimedes
2. Pythagoras
3. Euclid
4. Thales

Q.

Euclid is regarded as the father of Geometry. State whether the statement is True or False .

1. Pythagoras
2. Euclid

Q.

Question 17

Out of the given four options, only one is correct. Write the correct answer.

The instrument in the geometry box having a shape of a triangle is called a

(a) protractor (b) compass (c) divider (d) set square

Q.

Question 2 (f)

Classify each one of the following angles as right, straight, acute, obtuse or reflex:

Q.

Question 10

Out of the given four options, only one is correct. Write the correct answer.

Number of set squares in the geometry box is

(a) 0 (b) 1 (c) 2 (d) 3

Q. The minimum and maximum angles that can be drawn using two types of set squares are $x^{\circ }$ and $y^{\circ }$, then find $\frac{y^{\circ }}{6}-4x^{\circ }$.

1. \N

Q. A student measured a line segment using a divider and placed it on the ruler as shown. The length of the line segment is .

1. 5 cm
2. 4 cm
3. 6 cm

Q.

Two instruments used for comparing line segments are ______________ and _______________

Q.

Each division on the scale of a protractor represents:

1. $0°$

2. $1°$

3. $90°$

4. $180°$

Q.

Question 9

Out of the given four options, only one is correct. Write the correct answer.

The instrument to draw a circle is

(a) ruler
(b) protractor
(c) divider
(d) compass

Q. In your geometry box, you can find that there are two triangular shaped scales as shown in the figure.

What are these called?

1. Divider

2. Protactor

3. Set squares

4. Ruler

Q. Draw any line segment $\overline{AB}$. Mark any point M on it. Through M, draw a perpendicular to $\overline{AB}$. (Use ruler and compasses)

Q. is known as the father of Geometry.

1. Archimedes
2. Pythagoras
3. Euclid
4. Thales

Q. Draw a circle of radius $3.6cm$. In the circle, draw a chord $AB=5cm$. Now shade the minor segment of the circle.

Q. Match the following with the geometric tools used to create them:

1. Ruler
2. Compass & ruler
3. Protractor
4. Pencil

Q. The instrument in the geometry box that resembles a triangle is called a ___.

1. Protractor
2. Compasses
3. Divider
4. Set-square

Q.

There is only one set square in a geometry box.

1. True
2. False

Q. Arjun has a geometry box. Out of several equipment that are there, there are 2 set squares. He was thinking about the angles that could be constructed using those 2 set squares. He took 4 examples to work on which are given in the options below. Which of the following is impossible to draw using the given set squares?

1. 
2. 
3. 
4. 

Q. Measure the angle given below, using the protractor and write down the measure:

[2 marks]

Q.

Which of the following is possible to draw using the given set squares?

1. 45°

2. 75°

3. 95°

4. 105°