2D and 3D Shapes

In two-dimensional shapes:

Sides are the straight lines that make a flat shape.

For example:


3a

 

A corner is a point where two sides meet.

For example:

2a

 

An angle is formed where two sides of a shape meet.

For example:

1a

 

In three-dimensional shapes:

A face is a flat surface of a 3D shape.
 

An edge is where two faces of a 3D shape meet.

 

A vertex is where two or more edges of a 3D shape meet.

 

For example:

 

1 b





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Help

The correct answer is

Remember :

The smallest number is the one that comes first while counting.

Solution :

To arrange the given numbers in order from smallest to greatest, find the smallest number among all the given numbers.

21,27,23

21 is the smallest number.