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In a pair of set-squares the order is wi...

In a pair of set-squares the order is with angles :

A

`30^@, 60^@, 90^@`

B

`30^@, 30^@, 45^@`

C

`75^@, 25^@, 80^@`

D

`65^@, 15^@, 100^@`.

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