Question

HOTSPOT LABEL

Question 11
The lines are parallel as marked in the picture.
Label the angle measures for angles 1, 2, 3 and 4.

Answer 1

1) 150°

2) 30°

3) 150°

4) 150°

if the lines are parallel, and a straight line bisects both of them, then the angle created on one line would be the same as the angle created on the other line.

for 1) we know that a straight line has 180° angle, so we just substract 180 by 30° to get 150°

for 3) we know that it is the same side as the upper line, so it must have the same angle as 1) hence 150°

for 4) we know that 4) is simply an opposite angle of 3), hence it is also 150°

for 2) Again, with the same logic as 1), a straight line has 180° angle, so we simply substract 180 with 150 to get 30. we can also answer two directly without looking at 3 and 4. check angles in parallel lines.

good luck