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17 December, 03:33

Angles ABC and DBE are vertical

angles. If the measure of ABC is 40, than what is the measure of ABD?

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  1. 17 December, 03:42
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    Answer: Angle ABD is 140 degrees.

    Step-by-step explanation:

    Angle ABC = 40 and vertical angles are equal so Angle DBE is also 40.

    In order to find Angle ABD you would take the degrees in a full circle which is 360 degrees and substract the two vertical angles you have.

    360 (full circle) - 40 (Angle ABC) - 40 (Angle DBE) = 280 degrees.

    The two remaining angles would also be vertical angles so divide the 280 degrees by 2.

    280/2 = 140

    4 angles: 40 + 40 + 140 + 140 = 360
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