# Transition Mathematics Chapter 6 Vocabulary - rays, lines and angles

## 16 terms

### opposite rays

rays that have the same endpoint and their union is a straight angle

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### linear pair

two angles that share the same side

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### vertical angles

two angles that when the opposite rays of the sides of one angle are the sides of the other angle

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### exterior angles

angles that are outside the other two lines

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### interior angles

angles that are between the other two lines

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### alternative exterior angles

exterior angles that are on opposite sides of the transversal

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### alternative interior angles

interior angles that are on opposite sides of the transversal

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### same-side exterior angles

exterior angles on the same side of the transversal

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### same-side interior angles

interior angles on the same side of the transversal

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### corresponding angles

angles that are in the same relative position in the intersections

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### What are the three properties of a parallelogram?

Consecutive angles of a parallelogram are supplementary; opposite angles of a parallelogram have the same measure; opposite sides of a parallelogram have the same length

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### consecutive angles

two angles whose vertices are the endpoints of the same side

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### consecutive sides

two sides with a common endpoint

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### congruent figures

figures with the same size and shape

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