Take cut-outs of two identical parallelograms, say ABCD and A′B′C′D′ (Fig 3.19).
Here is same as except for the name. Similarly the other corresponding
sides are equal too.
Place over . Do they coincide? What can you now say about the lengths
and ?
Similarly examine the lengths and . What do you find?
You may also arrive at this result by measuring and .
Take cut-outs of two identical parallelograms, say ABCD and A′B′C′D′ (Fig 3.19).
Here is same as .
Also, is same as
Place over . They coincide with each other.
The lengths and are equal and parallel lines.
The lengths and are equal and parallel lines.