In isosceles triangle RST below, what is the value of y?
A) 38
B) 71
C) 122
D) 142
The beautiful thing about education is that no one can take it away from you ~Hannah😜😜😜
The sum of all three angles of a triangle is always 180o
After you subtract 38o for T, the two Y's have 142o total
The value of a single Y is half of 142o, thus each Y = 71o
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