Question

12. Fill in the blanks:
(1) A triangle has ...... sides,
angles and ... vertices.
(11) The sum of the angles of a triangle is ......
(iii) The sides of a scalene triangle are of ... lengths.
(iv) Each angle of an equilateral triangle measures.....
(v) The angles opposite to equal sides of an isosceles triangle are........
(vi) The sum of the lengths of the sides of a triangle is called its............​

Answer 1

Answer:

1.) three , three

2.) 180

3.) unequal

4.) 60

5.) equal

6.) perimeter

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Answer 2

Answer:

a triangle has 3 sides and 3vertices

the sum of the angles of a triangle is 180

(4) each angle of an equilateral triangle measures 60

the angle opposite to equal sides of an isosceles triangle are equal

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