Question

In the given figure, all triangles are equilateral and AB = 8 units. Other triangles have been
formed by taking the midpoints of the sides. What is the perimeter of the figure?
(NCERT Exemplar)
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Answer 1

Answer:

4cm

Step-by-step explanation:

Because, There is a theorem (The line joining the midpoints of two sides of the triangle parallel to third side is equal to the half of the third side)

If a line passes through midpoints of AB and AC respectively parallel to base BC be PQ.

WE know that,

BC =8cm

PQ=1/2BC

PQ=4cm

Since the other two triangles are also equilateral

Therefore the sides are equal to 4cm

Answer 2

Step-by-step explanation:

इन द गिवन फिगर ऑफ जेंडर इक्वलिटी एंड एबी इज इक्वल टू 1 यूनिट ऑफ द ट्रायंगल हैव बीन फॉर्म्ड बाय टेकिंग द माइंड पॉइंट ऑफ द व्हाट इज द पेरीमीटर ऑफ रिवर