# Angles

Flashcards by Shyla2011, updated more than 1 year ago
 Created by Shyla2011 about 7 years ago
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### Description

GED Geometry (Angles) Flashcards on Angles, created by Shyla2011 on 03/23/2014.

## Resource summary

 Question Answer How is an angle formed? Image: angle.gif (image/gif) What does the measure of an angle depend on? The size of the opening between the sides. What is the unit of measure for angle openings? Degree Complementary Two angles are complementary, if the add up to 90, which means they form a right angle. Supplementary Two angles are supplementary if their measures add up to 180, which means they form a straight angle What happens when two lines intersect or cross? They form two pairs of equal angles. Vertical Angles The equal angles are opposite (or across) from each other What are vertical angles? Equal Perpendicular Lines Lines that intersect at a right angle. They create a square corner. Parallel Lines Lines that run side by side and do not cross at any point if extended. Transversal A third line that crosses two parallel lines. When a transversal crosses two parallel lines, a set of four angles is formed at each point of intersection. Right Angle 90 Acute Angle Less than 90 Obtuse Angle More than 90 and less than 180 Straight Angle 180

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