# NCERT Mathematics Class 9 Exemplar Ch 7 Triangles Part 4 (For CBSE, ICSE, IAS, NET, NRA 2022)

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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 ∆ ABC such that and Show that ∆

Q. 3. CDE is an equilateral triangle formed on a side CD of a square ABCD (Fig. 7.5) . Show that

Q. 4. In Fig, , such that and . Show that .

Q. 5. Q is a point on the side SR of a ∆ PSR such that . Prove that

Q. 6. S is any point on side QR of a ∆ PQR. Show that: