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Question

In the given figure ABC=69, ACB=31.Find BDC
1252303_e8a25ad62ffb41ff928871b557d00448.PNG

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Solution

In ABC
BAC+ABC+ACB=180o (Angle sum property)
BAC+69o+31o=180o
BAC=180o100o=80o
For segment BADCB,
VBDC and BAC are angles in the same segment. So, they must be equal
BDC=BAC (Angles in the same segment are equal)
BDC=80o

1343195_1252303_ans_b2c1dcbc2b534b6984277612a065bcb1.PNG

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