Class 9 – Triangles

Question 6: In Fig.7.21, AC=AE, AB=AD and ∠BAD = ∠EAC. Show that BC = DE. △ Question 5 Question 7

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Question 5: Line l is the bisector of an angle ∠A and B is any point on l. BP and BQ are perpendiculars from B to the arms of ∠A (see Fig. 7.20). Show that: (i) △APB ≅ △AQB(ii) BP…

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Question 4: l and m are two parallel lines intersected by another pair of parallel lines p and q (see Fig. 7.19). Show that △ABC ≅ △CDA. △ Question 3 Question 5

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Question 3: AD and BC are equal perpendiculars to a line segment AB (see Fig. 7.18). Show that CD bisects AB. △ Question 2 Question 4

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Question 2: ABCD is a quadrilateral in which AD = BC and ∠DAB = ∠CBA (see Fig. 7.17). Prove that (i) △ABD ≅ △BAC (ii) BD = AC (iii) ∠ABD = ∠BAC. △ Question 1 Question 3

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Question 1: In quadrilateral ACBD, AC = AD and AB bisects ∠A (see Fig. 7.16). Show that △ABC ≅ △ABD. What can you say about BC and BD? △ Home Question 2

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