Name: Overview of Tools in a Geometry Box
Uploaded: 2019-07-19
Duration: 56 s
Description: We have seen the tools in the geometry box, but what they are called? And what are the common uses of these tools? Let's watch this important video and enhan...

Question

Column A		Column B
(a)	The instruments, used to draw perpendicular and parallel lines, are known as ______.	(p)	protractor
(b)	To measure the number of degrees in an angle, an instrument called _______ is used.	(q)	set-squares
(c)	The instrument, used to mark-off equal lengths, but does not measure them and also draw arcs and circles, is known as _______.	(r)	divider
(d)	______ has a pair of pointers and used to compare lengths.	(s)	compass

Accepted Answer

$\Rightarrow$ A set square or triangle (American English) is an object used in engineering and technical drawing, with the aim of providing a straightedge at a right angle or other particular planar angles to a baseline.

So, The instruments, used to draw perpendicular and parallel lines, are known a set-squares.

$\Rightarrow$ A protractor is a tool that is used to measure and draw angles in geometry. A protractor in a geometry box is in the shape of half-disc or semicircular which can measure up to $180$ degrees.

So, To measure the number of degrees in an angle, an instrument called a protractor is used.

$\Rightarrow$ Compass is one of the mathematical tools which is used to draw a geometrical figure, such as a circle. It is also used in the intersection of line segments and tools, which is used to intersect the line segment and helps to find the midpoint of the shapes.

So, The instrument, used to mark-off equal lengths, but does not measure them and also draw arcs and circles, is known as a compass.

$\Rightarrow$ The dividers can be used for geometric activities such as scribing circles, as well as taking and moving measurements.

So, divider has a pair of pointers and used to compare lengths.

Column A Column B

(a)

The instruments, used to draw perpendicular and parallel lines, are known as ______.
(q) set-squares

(b)

To measure the number of degrees in an angle, an instrument called _______ is used.
(p) Protractor

(c)
The instrument, used to mark-off equal lengths, but does not measure them and also draw arcs and circles, is known as _______.
(s) compass

(d) ______ has a pair of pointers and used to compare lengths. (r) divider

Hence, the required table is shown above.

Important Questions on Practical Geometry

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