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Demo

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    Exercise 6.3.1

    Exercise 6.3.2

    Exercise 6.3.3

    Exercise 6.3.4

    Exercise 6.3.5

    Exercise 6.3.6

    Exercise 6.3.7

    Exercise 6.2.1

    Exercise 6.1.1

    Exercise 6.1.2

    Try These

    Exercise 4.1

    Exercise 4.3

    Exercise 5.1

    Exercise 5.2

    Exercise 5.3

    Exercise 5.4

    Exercise 5.5

    Exercise 5.6

    Exercise 5.7

    Exercise 5.8

    Exercise 6.1

    Exercise 9.1

    Exercise 9.3.2

    chapter 9.2

    Exercise 8.1

    Try These_1

    Exercise 8.2.1

    Exercise 8.3.1

    Execise 8.3.2

    Exercise 8.2.3

    Exercise 8.3.4

    Exercise 10.1.1

    Exercise 10.1.2

    Exercise 10.2.2

    Exercise 10.3.1

    Exercise 10.3.2

    Exercise 10.3.3

    Exercise 10.4.1

    Exercise 10.4.2

    Exercise 10.4.3

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Demo > Exercise 5.6

Exercise 5.6

1.Name the types of following triangles.

(a) Triangle with lengths of sides 7 cm, 8 cm and 9 cm : .

(b) ΔABC with AB = 8.7 cm, AC = 7 cm and BC = 6 cm : .

(c) ΔPQR such that PQ = QR = PR = 5 cm : .

(d) ΔDEF with m∠D = 90° : .

(e) ΔXYZ with m∠Y = 90° and XY = YZ : .

(f) ΔLMN with m∠L = 30°, m∠M = 70° and m∠N = 80° : .

 2. Match the following : 3. Name each of the following triangles in two different ways: (you may judge the nature of the angle by observation).

4. Try to construct triangles using match sticks. Some are shown here.Can you make a triangle with.

(Remember you have to use all the available matchsticks in each case)Name the type of triangle in each case.If you cannot make a triangle, think of reasons for it.And Answer in the form of Yes or No.

(a) 3 matchsticks?

(b) 4 matchsticks?

: .

(c) 5 matchsticks?

.

(d) 6 matchsticks?

: .