Classify Angles Section 7 1 Vocabulary An angle
Classify Angles Section 7. 1
Vocabulary An angle is formed by two _____ that share a common ______. The ______ is the point where the two rays meet.
Notes: Name and Identify Angles Two angles are ______ if they are opposite angles formed by the intersection of wo lines. Vertical angles are ______ or have the same measure. Two angles are _______ if they share a common vertex, a common side, and do not overlap. You can name an angle by its vertex and its points.
Notes: Key Concept
Example Name each angle in four ways. Then classify each angle as acute, right, obtuse, or straight.
Example Name each angle in four ways. Then classify each angle as acute, right, obtuse, or straight.
Example Name each angle in four ways. Then classify each angle as acute, right, obtuse, or straight.
Notes: Find a Missing Measure You can use what you learned about vertical and adjacent angles to find the value of a missing measure.
Example What is the value of x in the figure?
Example What is the value of y?
Critical Thinking Identify a pair of vertical angles and adjacent angles on the railroad crossing sign. Justify your response.
Essential Question Describe the differences between vertical and adjacent angles. _______________________________________ ____________________
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