Find the value of x in each case. Give reasons to justify your solutions!
L, M ∈ KN
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Answer:
x = 38
Step-by-step explanation:
∠ LMO and ∠ NMO form a straight angle and are supplementary, thus
∠ LMO = 180° - 84° = 96°
The external angle of a triangle is equal to the sum of the 2 opposite interior angles.
∠ KLO is an exterior angle of the triangle, thus
x + 96 = 134 ( subtract 96 from both sides )
x = 38
Based on the triangle sum theorem and the definition of straight line angles, x = 38°
Recall the following:
Find m∠LMO and m∠MLO
m∠LMO = 180 - 84 (straight line angles)
m∠LMO = 96°
m∠MLO = 180 - 134 (straight line angles)
m∠MLO = 46°
x = 180 - 96 - 46 (triangle sum)
x = 38°
Therefore, based on the triangle sum theorem and the definition of straight line angles, x = 38°
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