Parallel Lines (Reasoning and Proof) Page 6 of 6April 20( 4 points) In the figure below, m∠1=2x+10,m∠2=3x+30, and m∠3=5x− Are lines a and b parallel? Show work and explain your reasoning.2x+10
Q. Parallel Lines (Reasoning and Proof) Page 6 of 6April 20( 4 points) In the figure below, m∠1=2x+10,m∠2=3x+30, and m∠3=5x− Are lines a and b parallel? Show work and explain your reasoning.2x+10
Alternate Interior Angles Theorem:m/1=2x+10 and m/2=3x+30 are alternate interior angles, if lines a and b are parallel, then m/1=m/2.
Set Equations Equal: Set the expressions for m/1 and m/2 equal to each other to solve for x.2x+10=3x+30
Subtract 2x: Subtract 2x from both sides to get x on one side.10=x+30
Subtract 30: Subtract 30 from both sides to solve for x.−20=x
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