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4 congruent t...

Question

4 congruent triangles are placed along the sides of a square such that side of the square is equal to base of the triangle. If we join the vertices of the triangle it becomes a

A

Prism

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B

Pyramid

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C

Cylinder

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D

Cuboid

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Solution

The correct option is B
Pyramid

Fold the triangles placed along the sides of the square, from outside to inside. It will take the shape of pyramid with square base.

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Q. Question 13

We have 4 congruent equilateral triangles. What do we need more to make a pyramid?
(a) An equilateral triangle.
(b) A square with same side length as of triangle.
(c) 2 equilateral triangles with side length same as the triangle.
(d) 2 squares with side length same the as triangle.

When a square and triangle are joined together, the new shape formed has sides and vertices.

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