Answer:
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Step-by-step explanation:
I'm in seventh grade. I haven't learned that yet.
try asking your teacher.
A=x
B= 2x
C=3x
If you add them up =
6x =180
÷6 both sides
x=30
A=30
B=60
C=90
one angle is 90 degrees so the triangle is classified as a right triangle
