Tag: open shapes of regular solids

Questions Related to open shapes of regular solids

If a solid figure has $15$ edges and $10$ vertices, then the number of faces of a solid figure is 

maths open shapes of regular solids nets of a solid nets of three-dimensional shapes net of a cone

  1. $9$

  2. $7$

  3. $11$

  4. $5$

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Correct Option: B
Explanation:
Using Euler's formula

$V+F=E+2$ 

$E=15$

$V=10 $

$\therefore 10+F = 15+2$

$\therefore  F= 17-10 $

$\therefore F=7 $

The number of dimensions, a point has

maths open shapes of regular solids nets of a solid nets of three-dimensional shapes net of a cone

  1. 0

  2. 1

  3. 2

  4. 3

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Correct Option: A
Explanation:

A point just marks a place which has no length, no breadth and no thickness.

So a point is devoid of these three fundamental dimensions.
$\quad \therefore \quad $ A point has 0 number of dimension.
Ans- Option A.

......... of solid shapes can be folded to make the solid.

maths open shapes of regular solids nets of a solid nets of three-dimensional shapes net of a cone

  1. 2D space

  2. 3D space

  3. nets

  4. none

Show answer
Correct Option: C
Explanation:

Nets of solid shapes can be folded to make a solid