Angles parallel lines Flashcards
What are parallel lines
Lines that are parallel do not ever meet
lines have arrows to indicate that they are parallel
Are these parallel lines?
No
the lines meet or will meet at some point
What is a transversal line
Which line is the transveral line?
A transversal is a line that passes through parallel lines
XY is the transversal line
What are corresponding angles?
Corresponding angles are formed when parallel lines are cut by a transversal, and the angles are equal.
What are Alternate angles?
Alternate angles are formed when parallel lines are cut by a transversal, and the angles are equal.
What are interior angles?
Interior angles are formed when parallel lines are cut by a transversal line and the two angles add up t0 180º
Find the missing angles and state the reasons
a = 45º (alternate angles)
Find the missing angles and state the reasons
x = 132º (alternate angles)
Find the missing angles and state the reasons
h = 180º - 111º (interior angles)
= 69º
Find the missing angles and state the reasons
w = 180º - 63º (interior angles)
= 117º
Find the missing angles and state the reasons
k = 63º - 20º (corresponding angles)
= 43º
Find the missing angles and state the reasons
j = 32º (corresponding angles and vertically opposite angles)
Find angles CBA
angle CBQ = 180º - 138º
= 42º
angle ABQ = 43º
angle CBA = 42º + 43º
= 85º
Find reflex angles DEF
angle DEK = 180º - 81º
= 99º
angle FEK = 180º - 31º
= 149º
angle CBA = 99º + 149º
= 248º
