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3-73 Symmetrical Figures

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A figure that has a line of symmetry is said to be symmetrical.  If you fold a figure in half and the two halves match exactly, the figure is said to be symmetrical.

Look at the squares below.  The red line is the line of symmetry.  A square has four lines of symmetry.

 

SymmetrySQ.gif (1443 bytes) SymmetrySQ2.gif (1462 bytes)
Spacer.gif (42 bytes)
SymmetrySQ3.gif (1467 bytes) SymmetrySQ4.gif (1330 bytes)

 

You cannot count all the lines of symmetry in a circle.  Look at the figure below to see some lines of symmetry in a circle.

 

SymmetryCR.gif (1708 bytes)

 

Look at the figures below.  Write "Yes" if the figure is symmetrical or write "No" if the figure is not symmetrical.

 

Symmetry1.gif (1420 bytes) Symmetry2.gif (1377 bytes)
Symmetrical? Symmetrical?
Spacer.gif (42 bytes) Spacer.gif (42 bytes)
Symmetry3.gif (1271 bytes) Symmetry4.gif (1140 bytes)
Symmetrical? Symmetrical?
Spacer.gif (42 bytes) Spacer.gif (42 bytes)
Symmetry5.gif (1224 bytes) Symmetry6.gif (1360 bytes)
Symmetrical? Symmetrical?
Spacer.gif (42 bytes) Spacer.gif (42 bytes)
Symmetry7.gif (1316 bytes) Symmetry8.gif (1169 bytes)
Symmetrical? Symmetrical?
Spacer.gif (42 bytes) Spacer.gif (42 bytes)
Symmetry9.gif (1119 bytes) Symmetry10.gif (1588 bytes)
Symmetrical? Symmetrical?

 
 

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