Q10 of 66 Page 91

Euclid stated that ‘all right angles are equal to each other’, in the form of

Euclid stated that ‘all right angles are equal to each other’, in the form of an axiom.


A right angle means 90°. Thus, All right angles are equal to 90°. Therefore, all right angles ae equal is an axiom. This is because it is derived from a true statement.

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