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SAI International School
                                                       CLASS - IX


               Mathematics
               Chapter-7: Triangles
               Home Assignment- 2


               Sub Topic: Some properties of aTriangle


               1      In ∆ABC, BC = AB and ∠B = 80°. Then, ∠A is equal to
                      (a) 80° (b) 40° (c) 50° (d) 100°
               2.     In ∆PQR, ∠R = ∠P and QR = 4 cm and PR = 5 cm.
                      Then, the length of PQ is =-----------

               3.     It is given that ΔABC     ΔRPQ. Is it true to say that BC = QR? Why?

               4.     If the median AD is perpendicular to BC, prove that      ABC is isosceles.

               5.     In isosceles triangle prove that medians on equal sides are also equal.

               6.     If in  ABC, altitude BE = altitude CF, prove that the triangle is isosceles.

               7.     In the figure, ∠BAD = ∠BCE and AB = BC. Prove that  ABD               CBE.
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