Answer:
m∠4 = 117
Step-by-step explanation:
m∠1 + m∠4 MUST EQUAL 180
So 180 - 63 = 117
=========================================================
Explanation:
Notice how angles 1 and 4 combine to form a straight line, or straight angle. This angle that forms is 180 degrees.
So,
(angle1)+(angle4) = 180
(63) + (angle4) = 180
angle4 = 180-63
angle4 = 117 degrees
Note: The fact that lines j and k are parallel does not effect the answer. We could make j and k nonparallel lines to get the same result.