- A21 cm
- B42 cm
- C14 cm
- D84 cm
Step-by-Step Solution
Each side of the midpoint triangle is half of a side of the original, so its perimeter is cm.
Answer: A) 21 cm
A triangle has sides 10 cm, 14 cm and 18 cm. Find the perimeter of the triangle formed by joining the midpoints of its sides.
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