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
Q3 : Steps of construction :
i : Draw AB and mark a point as C on it.
ii : Construct m∠BCD= 90° at point C.
iii : Draw an arc of radius 8cm and centre at C intersecting CD at E.
iv : Draw an arc of radius 8cm and centre C intersecting CB at point P.
v : Draw an arc of radius = mPE and centre at C, which intersects CB at Q. PQ is the side of the required square.
vi : Draw perpendicular QM at Q.
vii : Draw an arc of radius mPQ and centre at Q which intersects QM at R.
viii : Draw two arcs, each of radius mPQ, one with centre at P and second with centre at R which intersects at S.
ix : Join P with S and R with S. Hence, PQRS is the required square.
Q4 : Steps of construction :
i : Draw mAB = 4cm.
ii : Construct m∠A = m∠B = 90° and Draw AG and BH.
iii : Draw an arc with centre at A and of radius 6cm which intersects AG at D.
iv : Draw an acr with centre at B and of radius 6cm which intersects BH at C.
v : Join C with D. Hence, ABCD is the required rectangle.
Class 6th Math New Book 2023:
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Class 7th Math New Book 2023:
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Class 8th Math New Book 2023:
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