Page 157 - New Medley 5 Semester 2

B. Name each of the following triangles in two different ways based on
the sides and angles.

1. 2. 3.
6 cm 60° 6 cm 7 cm 45° 7 cm 140° 9 cm

60° 60°
6 cm 45°
7 cm
4. 5. 6.
9 cm 15 cm 20° 10 cm 140° 10 cm

12 cm

80° 80°

C. Classify the triangles that have following measures.

1. On the basis of angles

(a) 40°, 50°, 90° (b) 60°, 60°, 60° (c) 110°, 35°, 35°

(d) 45°, 90°, 45° (e) 78°, 22°, 80° (f) 91°, 19°, 70°

2. On the basis of sides

(a) 3 cm, 4 cm, 5 cm (b) 8 cm, 8 cm, 10 cm

(c) 15 cm, 15 cm, 15 cm (d) 40 cm, 45 cm, 45 cm

(e) 4 m, 3.5 m, 4.5 m (f) 6 cm, 10 cm, 12 cm

D. Recognise regular polygons in the following shapes.

1. 70° 2.
110°
60°
110°
70°
60° 60°

3. 4.

90° 90°

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