ABCD is a cyclic quadrilateral- If - A - - C - 20- then - C -

The correct option is C 80^∘ cyclic quadilatend ⇒ opposite angles are supplemetary #160; #160; ⇒∠ A+∠ C = 180^∘ ∠ A ∠ C = 20^∘⇒∠ C=80^ ...

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Incircle and Its Construction

ABCD is a cyc...

Question

ABCD is a cyclic quadrilateral. If $∠ A - ∠ C = 20^{\circ}$ then $∠ C =$ .

70^{\circ}

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110^{\circ}

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80^{\circ}

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75^{\circ}

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ABCD is a cyclic quadrilateral whose diagonals intersect at a point E. If $∠ D B C = 70^{\circ}$ and $∠ B A C = 30^{\circ}$ , then $∠ B C D$ = ___.

In the given figure, ABCD and ABEF are two cyclic quadrilateral. If $∠ B C D = 110^{\circ} t h e n ∠ B E F = ?$

(a) $55^{\circ}$

(b) $70^{\circ}$

(d) $110^{\circ}$

∠ A = (x + y + 10) °, ∠ B = (y + 20) °, ∠ C = (x + y - 30) ° and ∠ D = (x + y) ° . Then, ∠ B = ?

A B C D

∠ A = 80^{\circ}, ∠ B = 70^{\circ}, ∠ C = 130^{\circ},

∠ D

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