bellacyoulater
bellacyoulater
07-05-2022
Mathematics
contestada
how to find y in angle sum theorem
Respuesta :
Hrishii
Hrishii
07-05-2022
Answer:
y = 90°
Step-by-step explanation:
110° is the measure of exterior angle of bigger triangle.
-> (x + x) + 70° = 110° (By exterior angle theorem)
-> 2x = 110° - 70°
-> 2x = 40°
-> x = 40°/2
-> x = 20°
y is the measure of exterior angle of smaller triangle.
-> y = x + 70° (By exterior angle theorem)
-> y = 20° + 70°
->
y = 90°
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