Question

In a quadrilateral <A = 90 degree, <B = 65 degree, <D = 105 degree, find <C?​

Answer 1

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Answer 2

Answer:

100°

Step-by-step explanation:

∠A = 90°

∠B = 65°

∠C = x

∠D = 105°

Sum of the interior angle of quadrilateral = 360°

∠A + ∠B + ∠C + ∠D = 360°

90° + 65° + x + 105° = 360°

260° + x = 360°

x = 360° - 260°

x = 100°

∴ ∠C = x = 100°