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07-02-2018
Mathematics

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Tell whether the angles are complementary or supplementary. Then find the value of x.

[Only 13-15]

Tell whether the angles are complementary or supplementary Then find the value of xOnly 1315 class=

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SoftSuga SoftSuga

07-02-2018

For number 15, angle 4 is 50 degrees, and it’s also a vertical angle. That means that angle 2 is also 50 degrees. All four angles have to add up to 360 degrees.
360 - 100 = 260
260/2 = 130
Angles 1 and 3 are both 130 degrees.

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