Скачать или смотреть Class 8th Math Exercise 4.2 [ Q 1, 2 ] Class 8 Math Unit 4 Exercise 4.2

In this lecture, I explained the Class 8 Math Exercise 4.2 the new book in detail.
If you have any questions in class 8 math ex 4.2, you can ask me in the comment section.
This lecture for Class 8th Mathematics is created for all who want to prepare this topic in detail.

If you watch this video ,you can learn topics as follows:
1. 8 math exercise 4.2

Q1: Steps of construction :
i : Draw the diagonal mAC = 4.5cm
ii : Draw the perpendicular bisector LM of the diagonal AC cutting it at point O.
iii : With O as centre and radius mOA, draw arcs cutting LM at D and B.
iv : Join B with A and C. Join D with A and C, which gives required square ABCD.

Q1: Steps of construction :
i : Draw AB and mark a point as P on it.
ii : Construct m∠BPN= 90° at point P.
iii : Draw two arcs of radius 4cm and centre at P which intersect PB at M and PN at L.
iv : Draw an arcs of radius = mLM and centre at M which intersect PB at Q.
v : Draw an arc of radius = mPQ and centre at P which intersect PN at S.
vi : Draw two arcs each of radius = mPQ, one centre at Q and second centre at S. These arcs will intersects at point R.
vii : Join R with S and Q. Hence, PQRS is the required square.

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