Page 167 - Start Up Mathematics_5

(d) If we extend all the lines of letter N, how many points of intersection will be
formed?

(i) 5 (ii) 2 (iii) 3
4. Find out whether a triangle can be formed with the following measures or not.

(a) 35°, 55°, 80° (b) 62°, 47°, 71° (c) 58°, 82°, 40°

(d) 1 cm, 2 cm, 3 cm (e) 10 cm, 12 cm, 14 cm (f) 9 cm, 13 cm, 15 cm
5. Fill in the blanks.

(a) An angle whose measure is less than 90° is ________.
(b) A triangle with no two sides equal is called _________.
(c) A right-angled triangle has one of its angles measuring ________.

(d) Lines which do not meet at a point are called _________.
(e) When the angle between two lines is 90°, the lines are said to be ________.

SOME NCERT TEXTBOOK QUESTIONS

1. Look at the angles in the pictures and fill the table.

More than a Less than a
Angle Right angle
right angle right angle



STOP

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