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Vertical angles are non-adjacent angles formed by intersecting lines. Learn how to identify, define, and find vertical angles within simple and complex geometric figures easily.
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ANGLE RELATIONSHIPS Vertical Angles
What are Vertical angles? Definition: The non-adjacent angles formed by intersecting lines or line segments Remember that adjacent means ‘next to”
So what does it look like? 1 4 2 3 a) 2 intersecting lines form 4 angles b) Vertical angles are opposite one another with NO common sides c) But they do have a common vertex (so 1 and 3 are vertical angles) d) Vertical angles are congruent
What if I have a complex figure? How do I find the vertical angles? • Find the intersecting lines • Now locate the angles which are opposite from one another - so 1 and 4 are vertical - and 5 and 2+3 are vertical 1 5 2 3 4