Geometry help PLEASE!!!! 20 POINTS HELP!!’
1 answer:
Answer:
x = 12
Step-by-step explanation:
CDEF is a cyclic quadrilateral.
• the opposite angles of a cyclic quadrilateral sum to 180° , then
3x + 6x + 72 = 180
9x + 72 = 180 ( subtract 72 from both sides )
9x = 108 ( divide both sides by 9 )
x = 12
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