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Tutorial - Using Same side interior angle find the missing measure of x ex 4

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http://www.freemathvideos.com In this video playlist I show you how to solve different math problems for Algebra, Geometry, Algebra 2 and Pre-Calculus. The video will provide you with math help using step by step instruction. Math help tutorials is just what you need for completing your homework

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Step one: since lines are parallel we know the two angles are congruent.
Step two: set the two equations equal to each other and solve for x.

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if lines are parallel, corresponding angles are congruent.

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-Consecutive Interior Angles (Same side interior) :

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-Consecutive Interior Angles (Same side interior) :

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Consecutive Interior Angles. When two lines are crossed by another line (called the Transversal): The pairs of angles on one side of the transversal but inside the two lines are called Consecutive Interior Angles.

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In geometry, a transversal is a line that passes through two lines in the same plane at two distinct points

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-Proving lines Parallel With the Converse:

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-Proving lines Parallel With the Converse:

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You can prove two lines are parallel by using the converse of:
AlA THM, AEA THM, CORRESPONDING ANGLES THM, or the SSI THM,

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If lines are parallel, AEA are congruent

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If there are parallel lines AIA are congruent

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parallel lines are lines in a plane which do not meet; that is, two lines in a plane that do not intersect or touch each other at any point are said to be parallel.