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Mathematics 8 Online
OpenStudy (anonymous):

What is the measure of the missing angle? http://static.k12.com/calms_media/media/1299000_1299500/1299439/1/35c36e60a7d5b8b0936f1c339ee0461e083efa8d/140995.jpg

OpenStudy (cggurumanjunath):

70 + 70 + x = 180 (angle sum property of triangle) x = 180 - ( 70 + 70 ) = 180 - 140 = 40

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