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how can the properties of linear pairs and vertical angles help determine the angle measures created by the intersecting lines

User TheUturn
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A linear pair of angles is a pair of angles that adjacent to each other on a straight line.

Angles on a straight line add up to 180°

A vertical line on the straight line will split 180° into two equal angles of 90° as shown in the diagram below
how can the properties of linear pairs and vertical angles help determine the angle-example-1
User Matias Pequeno
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