CPM Homework Help : INT1 Problem 6-110

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6-110.

Refer to the diagram below.

If $m∠1 = 74º$ and $m∠4 = 3x − 18º$ , write an equation and solve for $x$ .
Step 1(a):
$3x − 18 = 74$
Step 2(a):
$3x = 92$
Answer (a):
$x = 30.6º$

If $m∠2 = 3x − 9º$ and $m∠1 = x + 25º$ , write an equation and solve for $x$ . Then determine $m∠2$ .
Hint (b):
Disregard your calculations for angle measure from part (a).
Hint 2(b):
Since the lines are parallel, angles $1$ and $2$ have equal measure.
Answer (b):
$x = 17º$ , $m∠2=42º$

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