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# Lines and angles

## Pair of angles

Practice
Complementary and supplementary angles (visual)Get 3 of 4 questions to level up!
Vertical anglesGet 3 of 4 questions to level up!
Linear pair and vertically opposite anglesGet 3 of 4 questions to level up!

## Lines parallel to the same line

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Practice

## Parallel lines and triangle

Learn
No videos or articles available in this lesson
Practice
Finding angle measures using trianglesGet 5 of 7 questions to level up!

## Angle sum and exterior angle property of a triangle

Practice
Find angles in trianglesGet 5 of 7 questions to level up!
Triangle exterior angle property problemsGet 3 of 4 questions to level up!

### About this unit

Let's study the properties of the angles formed when two lines intersect each other and also the properties of the angles formed when a line intersects two or more parallel lines at distinct points. Let's then use the knowledge of these properties to practice deductive reasoning.