In isosceles triangle RST below, what is the value of y?
2 answers:
Answer:
y =71
Step-by-step explanation:
The sum of the angles of a triangle add to 180
y+y+38 = 180
Combine like terms
2y +38 =180
Subtract 38 from each side
2y+38-38 =180-38
2y = 142
Divide each side by 2
2y/2 =142/2
y = 71
Answer:
71°
Step-by-step explanation:
total angle in a triangle is 180
y + y + 38 = 180
2y = 142
y = 71°
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