Page 166 - Start Up Mathematics_5

P
L
2 cm 3 cm
(e) (f)
125° M N
Q R 4 cm

___________________ ___________________
2. Find out whether a triangle can be formed with the given angles or not.

(a) 52°, 68°, 60° (b) 54°, 75°, 36° (c) 105°, 35°, 40°

(d) 90°, 25°, 50° (e) 68°, 110°, 22° (f) 115°, 15°, 95°
3. Find out whether a triangle can be formed with the given sides or not.

(a) 6 cm, 7 cm, 8 cm (b) 5 cm, 11 cm, 9 cm (c) 2 cm, 8 cm, 4 cm

(d) 12 cm, 14 cm, 30 cm (e) 13 cm, 15 cm, 20 cm (f) 8 cm, 5 cm, 10 cm

LET’S EVALUATE

1. Measure the following angles using a protractor.

A X

(a) (b)

B C Y Z
2. Draw the following angles using a protractor.

(a) 75° (b) 110° (c) 30° (d) 125° (e) 140°
3. Choose the correct answer.

(a) Which of these is a pair of parallel lines?

(i) (ii) (iii)

(b) Which of these letters forms a perpendicular?

(i) (ii) (iii)

(c) If we extend all the lines of letter K, how many points of intersection will be formed?
(i) 2 (ii) 1 (iii) 3

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