Write converse, inverse and contrapositive of the following conditional statement :
''If an angle is a right angle, then its measure is `90^(@)`''.

Explanation

Let p : An angle is a right angle .
q : Its measure is `90^(@).`
Converse : ` q to p`
If measure of an angle is `90^(@)`, then it is a right angle.
Inverse ` : ~ p to ~ q.`
If an angle is not a right angle, then its measure is not ` 90^(@)`.
Contrapositive ` : ~ q to ~ p.`
If measure of an angle is not ` 90^(@)`, then it is not a right angle.