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xxTIMURxx [149]
3 years ago
11

ABC is the middle line of MN in an equilateral triangle. If AB = 8 cm, then find the perimeter MBN.

Mathematics
1 answer:
qaws [65]3 years ago
4 0

Answer:

the answer is 12

Step-by-step explanation:

since the triangle is equilateral meaning all side of ABC is equal to each other AB= BC = AC= 8cm and MN is the middle line that divides AB and BC by two

thus, MB =BN= 4 cm. MN is the middle line thus will also be equal to the half of AC  meaning MN=AC/2= 4cm. and perimeter  is MBN = MN+MB+BN= 4cm+4cm+4cm =12cm

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