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Year 7 Maths Angles

Co-interior Angles on Parallel Lines

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Question 1
200646

The arrows show that the two lines are parallel. Angles \(a^\circ\) and \(b^\circ\) are co-interior angles. Which statement is true?

Co-interior angles a and bParallel lines cut by a transversal; a below the top line and b above the bottom line, both left of the transversal a° b°
A.
\(a = b\)
B.
\(a + b = 180\)
C.
\(a + b = 90\)
D.
\(a + b = 360\)
\(a + b = 180\)

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