NCERT Class 8 Mathematics Solutions: Chapter 4 – Practical Geometry Exercise 4.3 Part 1
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Image of Some Rule of Angles for Practical Geometry
Showing image of some rule of angles for practical geometry
Question: 1 Construct the following quadrilaterals:
(i) Quadrilateral MORE
,
(ii) Quadrilateral PLAN
(iii) Parallelogram HEAR
(iv) Rectangle OKAY
Answer
(i)
Given,,
To construct, a quadrilateral MORE.
Step of Construction:
(a) Draw a line segment.
(b) Construction and taking radius, draw an arc taking O as centre, which intersects at R.
(c) Also construct an angle at R and make the side RE.
(d) Construct another angle of at point M and make the side ME. Both sides ME and RE intersect at E.
It is the required quadrilateral MORE.
Image:
A Figure is Quadrilateral MORE
Given, figure is quadrilateral MORE
(ii)
Given, ,
To construct, quadrilateral PLAN
Step of Construction:
(1) The sum of Quadrilateral angle is
(2) Draw in line and quadrilateral is below.
Image:
A Figure is Quadrilateral PLAN
Given this figure Quadrilateral PLAN
(3) Draw an angle of at point L. As vertex A is 6.5 cm away from vertex L, cut a line segment LA of 6.5 cm.
Image:
A Draw an Angle of 75 Degree
In given figure draw an angle of 75 degree at point L
(4) Again draw an angle of at point A.
Image:
A Draw an Angle of 110 Degree
In given figure draw an angle of 110 degree at point A
(5) Draw an angle of at point P. this ray will meet the previously drawn ray from A at point N.
Image
A Draw an Angle of 90 Degree
Given this figure draw an angle of 90 degree at point P
PLAN is required Quadrilateral.