Find the measure of the exterior angle. *

Step-by-step explanation:

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⋆ [ Exterior angle is always equal to the sum of two non - adjacent interior angles ]

~Remove the unnecessary brackets

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~Add the like terms : 2x ° & 3x°

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~Move 4x to right hand side and change it's sign

~Similarly move 12 to left hand side and change it's sign

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1/2*qr*rs

step-by-step explanation:

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