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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
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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