Angle Chasing Technique: How to Solve the Angles X and Y?

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Angle Chasing Technique: How to Solve the Angles X and Y?

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The external angle of a triangle is equal to the sum of the opposite internal angles
2y = 48+48+40 ---->y = 68
68 = 48+x ----> x=20

saetainlatin
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Very didactic, there is also a property regarding the angle formed by an interior bisector and an exterior bisector. Greetings.

MEKHMAT