Question

5. Find the perimeter of the given triangles.

(i) An equilateral triangle with side 13 cm

(ii) An isosceles triangle whose two equal sides are 15 cm and the

third side is 20 cm long.

(iii) A scalene triangle with side 12 m, 10 m and 5 m.​

Answer 1

Answer:

1 is 39 cm

2 is 50 cm

3 is 27 cm

Answer 2

Answer:

i) perimeter of a equilateral triangle= 3*side

=3*13

=39cm

ii)perimeter of isosceles triangle = 2*equal sides +third side

=2*15+20

=30+20

=50cm

iii) perimeter of scalene triangle= a+b+c

=12+10+5

=27cm

Step-by-step explanation:

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