Which shape does not change when its sides are gently pushed?
APentagon
BTriangle
CRectangle
DSquare
Answer & Solution
Correct answer: B. Triangle
1. Make each shape from straws joined with clay and push one side.
2. A square, rectangle or pentagon can bend into a different shape.
3. A triangle stays the same, so it is the rigid shape.
_Source: NCERT Maths Mela Class 4, Ch 1 Shapes Around Us (ncert.nic.in/textbook/pdf/demm101.pdf), Shapes with Straws_
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