B. If ZC = 130° , find the value of angle ABD.
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Answer:
40°
Step-by-step explanation:
angle in semi circle is 90°
angle ADB=90°
in a cyclic quadrilateral sum of opposite angles is 180°
angle DAB= 50°
in triangle ABD
by angle sum property
angle ABD+50+90=180
angle ABD=180-140
angle ABD=40°
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