NCERT Mathematics Class 9 Exemplar Ch 7 Triangles Part 4
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Exercise 7.3
Q.1. 1.ABC is an isosceles triangle with and BD and CE are its two medians. Show that
Q.2. 2.In Fig, D and E are points on side BC of a β ABC such that and Show that β

Points on Side a, B, C, D
Loading imageβ’β’β’
Q.3. CDE is an equilateral triangle formed on a side CD of a square ABCD (Fig.7.5). Show that

Equilateral Triangle
Loading imageβ’β’β’
Q.4. In Fig, , such that and . Show that .

β ABC β β DEF
Loading imageβ’β’β’
Q.5. Q is a point on the side SR of a β PSR such that. Prove that
Q.6. S is any point on side QR of a β PQR. Show that: