mmaher
mmaher
17-01-2020
Mathematics
contestada
Im so confused pls help
Respuesta :
keelanM
keelanM
17-01-2020
Answer:
a = 49°
Explanation:
You use the rule ‘exterior angle of a triangle’ which states that the exterior angle is equal to the sum of the two opposite interior angles.
To put it mathematically:
a + a = a + 49° (Ext angles of triangle)
a = a - a + 49°
a = 49°
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