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Raavi Tiwari
@raavi-tiwari
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Joined: May 7, 2021
Last seen: Jun 14, 2021
Topics: 0 / Replies: 2064
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Answer to: In the figure, ΔODC ∝ 1/4 ΔOBA, ∠BOC = 125° and ∠CDO = 70°. Find ∠DOC, ∠DCO and ∠OAB.

As we can see from the figure, DOB is a straight line. Therefore, ∠DOC + ∠ COB = 180° ⇒ ∠DOC = 180° – 125° (Given, ∠BOC = 125°) = 55° In ΔDOC,...

5 years ago
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Answer to: State which pairs of triangles in Figure, are similar. Write the similarity criterion used by you for answering the question and also write the pairs of similar triangles in the symbolic form:

(i) Given, in ΔABC and ΔPQR, ∠A = ∠P = 60° ∠B = ∠Q = 80° ∠C = ∠R = 40° Therefore by AAA similarity criterion, ∴ ΔABC ~ ΔPQR (ii) Given, in...

5 years ago
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Answer to: The diagonals of a quadrilateral ABCD intersect each other at the point O such that AO/BO = CO/DO. Show that ABCD is a trapezium.

Given, Quadrilateral ABCD where AC and BD intersects each other at O such that, AO/BO = CO/DO. 2s.png Prove that, ABCD is a trapezium From ...

5 years ago
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Answer to: ABCD is a trapezium in which AB || DC and its diagonals intersect each other at the point O. Show that AO/BO = CO/DO.

Given, ABCD is a trapezium where AB || DC and diagonals AC and BD intersect each other at O. 2s.png We have to prove, AO/BO = CO/DO From the ...

5 years ago
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Answer to: Using Converse of basic proportionality theorem, prove that the line joining the mid-points of any two sides of a triangle is parallel to the third side.

Given, in ΔABC, D and E are the mid points of AB and AC respectively, such that, AD = BD and AE = EC. 2s.png We have to prove that, DE || BC....

5 years ago
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Answer to: Using Basic proportionality theorem, prove that a line drawn through the mid-points of one side of a triangle parallel to another side bisects the third side.

Given, in ΔABC, D is the midpoint of AB such that AD = DB. A line parallel to BC intersects AC at E as shown in above figure such that DE || BC. W...

5 years ago
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Answer to: In the figure, A, B and C are points on OP, OQ and OR respectively such that AB || PQ and AC || PR. Show that BC || QR.

Given here, In ΔOPQ, AB || PQ By using Basic Proportionality Theorem, OA/AP = OB/BQ …………….(i) Also given, In ΔOPR, AC || PR By using B...

5 years ago
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Answer to: Find out more about the language divisions in Pakistan that led to the creation of the new nation of Bangladesh. How did Bangladesh achieve independence from Pakistan?

After the division of India in 1947 into India and Pakistan (West and East), the Urdu speaking rulers of West Pakistan kept torturing the Bengali spea...

5 years ago
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Answer to: How was the economic development of India visualised in the early decades after Independence?

In 1950, the government set up a Planning Commission to help design and execute suitable policies for economic development. There was a broad agreemen...

5 years ago
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Answer to: Give one reason why English continued to be used in India after Independence.

English continued to be used in India after Independence because south Indian states expressed strong opposition to Hindi.

5 years ago
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Answer to: After Independence, why was there a reluctance to divide the country on Uguistic times?

Way back in the 1920s, the Indian National Congress, in the beginning, had promised that after independence, each major linguistic group would have it...

5 years ago
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Answer to: What did Dr. Ambedkar mean when he said that In politics we will have equality, and in social and economic life we will have inequality?

By the statement, he meant that in political life UAF would give equality. We have one person one vote policy. But this would not automatically remove...

5 years ago
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