Line Symmetry in Reptiles

line symmetry - the fold test

Line Symmetry – The Fold Test

What is a Reptile?

Reptiles are cold-blooded animals. This means their internal temperature depends on the temperature of their surroundings. Reptiles have backbones so are also classed as vertebrates. The skin of a reptile is covered in scales or hard protective plates.
Lizards, snakes, turtles, crocodiles, alligators & iguanas are all reptiles and they all have bilateral symmetry.  
What is the Fold Test?
The Fold Test is an easy way to see if something has reflectional symmetry. All you have to do is cut out a shape and fold it along an imaginary straight line so one half matches the other side EXACTLY. If it can be done then the shape has bilateral symmetry. If it can’t be done then the shape is not symmetrical.
Most of the time we do the fold test in our minds i.e. we imagine folding the object. Most real life animals would get upset if you tried to fold them in half hehehe
What the Ninjas Say:
Ninja One – ‘Does this little cutie pass the Fold Test? Look  carefully at the eyes, teeth, nostrils, etc’
Ninja Two – It is probably not a good idea to try to fold a real crocodile 😉 
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