ANSWERS/HINTS 337
File Name : C:\Computer Station\Maths-IX\Chapter\Answers (16–12–2005) PM65
EXERCISE 7.2
6.✂ BCD =✂ BCA + ✂ DCA = ✂ B + ✂ D 7. each is of 45°EXERCISE 7.3
- (ii) From (i), ✂ ABM = ✂ PQN
EXERCISE 7.4
- Join BD and show ✂ B > ✂ D. Join AC and show ✂ A > ✂ C.
- ✂ Q + ✂ QPS > ✂ R + ✂ RPS, etc.
EXERCISE 8.1
- 36°, 60°, 108° and 156°.
- (i) From ☎ DAC and ☎ BCA, show ✂ DAC = ✂ BCA and ✂ ACD = ✂ CAB, etc.
(ii) Show ✂ BAC = ✂ BCA, using Theorem 8.4.
EXERCISE 8.2
- Show PQRS is a parallelogram. Also show PQ || AC and PS || BD. So, ✂ P = 90°.
- AECF is a parallelogram. So, AF || CE, etc.
EXERCISE 9.1
- (i) Base DC, parallels DC and AB; (iii) Base QR, parallels QR and PS;
(v) Base AD, parallels AD and BQ
EXERCISE 9.2
- 12.8 cm. 2.Join EG; Use result of Example 2.
- Wheat in ☎ APQ and pulses in other two triangles or pulses in ☎ APQ and wheat in
other two triangles.
EXERCISE 9.3
- Draw CM ✄ AB and DN ✄ AB. Show CM = DN. 12.See Example 4.