3. Add the following. (ii) a – b + ab, b – c + bc, c – a + ac 3. Add the following. (ii) a – b + ab b – c + bc c – a + ac October 11, 2020 Category: Chapter 9 - Algebraic Expressions and Identities , Maths , NCERT Class 8 , Facebook Messenger WhatsApp Share this:TwitterFacebook Related 3. Add the following. (ii) a – b + ab, b – c + bc, c – a + acIn figure, A, B and C are points on OP, OQ and OR respectively such that AB || PQ and AC || PR. Show that BC || QR.12. ABCD is a trapezium in which AB || CD and AD = BC (see Fig. 8.23). Show that (i) ∠A = ∠B (ii) ∠C = ∠D (iii) ΔABC ≅ ΔBAD (iv) diagonal AC = diagonal BD
