Shapes such as bridges are made stronger by adding:
ADoubled boards
BDrilled bolts
CDropped braces
DDiagonal beams
Answer & Solution
Correct answer: D. Diagonal beams
1. A shape can be strengthened by dividing it into triangles.
2. Different shapes are made stronger by using diagonal beams.
3. These beams divide the shape into triangles.
_Source: NCERT Class 5 Mathematics, 'Math-Magic', Ch 2 'Shapes and Angles'_
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