Let ABCD be a quadrilateral with ∠ADC = 70°, ∠ACD = 70°, ∠ACB = 10° and ∠BAD = 110° . The measure of

Question

Let ABCD be a quadrilateral with ∠ADC = 70°, ∠ACD = 70°, ∠ACB = 10° and ∠BAD = 110° . The measure of ∠CAB (in degrees) is:

Accepted Answer

{"content":[{"content":[{"marks":[{"type":"bold"}],"text":"Step 1:","type":"text"},{"type":"text","text":" 70° + 70° + ∠DAC = 180°"}],"type":"paragraph"},{"type":"paragraph","content":[{"marks":[{"type":"bold"}],"text":"Step 2:","type":"text"},{"type":"text","text":" =>     ∠DAC = 40°"}]},{"content":[{"type":"text","marks":[{"type":"bold"}],"text":"Step 3:"},{"type":"text","text":" Now ∠DAC + ∠CAB = 110°"}],"type":"paragraph"},{"content":[{"text":"Step 4:","type":"text","marks":[{"type":"bold"}]},{"text":" =>     ∠CAB = 110° − 40°","type":"text"}],"type":"paragraph"},{"type":"paragraph","content":[{"type":"text","marks":[{"type":"bold"}],"text":"Step 5:"},{"text":" x ","type":"text"},{"attrs":{"latex":"y"},"type":"math_inline"},{"text":" z         ","type":"text"},{"attrs":{"latex":"x y"},"type":"math_inline"},{"text":"  z             x ","type":"text"},{"type":"math_inline","attrs":{"latex":"y"}},{"type":"text","text":" y zz x"}]}],"type":"doc"}

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