Year 7

Straight lines, vertically opposite angles and parallel lines

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Example 1

Straight-line angles
Straight-line anglesA straight line with an upward ray divides its angle into 60 degrees and x. Diagram not to scale. Use the labelled measurements.60°x°
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Example 2

Intersecting straight lines
Intersecting straight linesTwo straight lines cross. The opposite upper-left and lower-right angles are labelled 80 degrees and x. Diagram not to scale. Use the labelled measurements.80°x°
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Example 3

Parallel lines and a transversal
Parallel lines and a transversalTwo parallel horizontal lines are crossed by one sloping transversal. Corresponding angles are 140 degrees and x. Diagram not to scale. Use the labelled measurements.140°x°
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