This math skill focuses on determining opposite and supplementary angles when two lines intersect. When lines cross, the angles directly across from each other are identical, and adjacent angles along a straight line add up to 180 degrees.
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Solve opposite and supplementary angles when lines cross
Test your understanding of solve opposite and supplementary angles by practicing it! Work through the below exercises to use it in practice.
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Identify what we know about these angles
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When two lines cross the angles that are opposite to each other are identical
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A straight line is 180 degrees, so if we know part of that angle, the other part must be the remainder of 180
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With one angle left, we can see that it has an opposite, so it's 110 degrees