1.

Please explain the answers you give

Answer»

X = 280°
Explanation -
const.- DRAW a line segment PQ from point O ,i.e. PQ || AB || CD
Proof- ANGLE BOQ = 55° ( alternate angle)
angle DOQ = 25° ( " )
ANGLEBOD +angle DOQ +angle BOQ= 360
BOD +25+55=360
BOD =360-80
=280°



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