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Question
In ∆JKL, if ∠J = 60° and ∠K = 40°, then find the value of exterior angle formed by extending the side KL
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Solution
When extending the side KL, the exterior angle formed is equal to the sum of the interior opposite angles
∠JLX = ∠LJK + ∠LKJ
= 60° + 40°
= 100°
Exterior angle formed = 100°
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