Page 189 - ICSE Math 6

EXERCISE 17.1

1. Classify the triangles shown below on the basis of their sides.

12 cm 13 cm
6 cm 6 cm
(a) 6 cm (b) (c) 6 cm

8 cm 5 cm 6 cm

2. Classify the triangles shown below on the basis of their angles.

(a) (b) (c)
60° 45° 30° 60° 30°

3. Distinguish the following triangles on the basis of their sides and angles.

60° 8 cm
(a) (b) 4 cm 5 cm (c) 4 cm 125°

60° 60° 7 cm
3 cm

30°
5 cm 80° 5 cm 70° 8 cm
(d) 3 cm (e) 3 cm (f) 6 cm
30° 70° 40° 70°
7 cm 120°
5 cm 30°
6 cm
4. Find z in the following triangles.

110°
(a) (b)

65° z 130°
50° z

48°
(c) (d)

z 65° 32° z

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