White shapes and black shapes are used in a game. some of the shapes are circles. All the other shapes are squares. The ratio of the number of white shapes to the number if black shapes is 3:7. The ratio of the white circles to the number of white squares is 4:5z The ratio of the number of black circles to the number of black squares is 2:5. Work out what fraction of all the shapes are circles.

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image result for what is another name for consecutive interior angles? ​

when two lines are crossed by another line (called the transversal): the pairs of angles on one side of the transversal but inside the two lines are called consecutive interior angles. in this example, these are consecutive interior angles: d and f.

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congruent: (geometry) (of figures) identical in form; coinciding exactly when superimposed.