Lines & Angles
Angles & Lines
Angles Vocab
Vocab: Angles
100
How many pairs of vertical angles are there?
Which pairs are vertical angles?
<1, <3
<2, <4
<5, <7
<6, <8
100
If <4 = 67, what is <5?
<113
100
Two or more angles whose angle measures add up to 90*.
Complementary Angles
100
Each of the pairs of opposite angles made by two intersecting lines. They have the same angle measure.
Vertical Angles
200
If <4 = 67, what is <5?
<113
200
If <2 is 114, what is <5; why?
<5 = 66
Ex: <2 & <6 are corresponding, <5 & <6 are supplementary
200
Two or more angles whose angle measures add up to 180*.
Supplementary Angles
200
A line that crosses (intersects) two or more lines.
Transversal
300
If <7 is 2y + 7 and <1 is 115, what is y?
y = 54
300
If <4 is 67 and <7 = 3x + 14, what is <7?
x = 33
<7 = 113
300
These angles are on opposite sides of a transversal that crosses parallel lines and are outside the other two lines. They have congruent angle measures.
Alternate Interior Angles
300
The angles which occupy the same relative position at each intersection where a straight line crosses two others.
Corresponding Angles
400
If <5 = 42 + x and <4 = 18 + 3x
What is x? <5? <4?
x = 40
<5 = 82
<4 = 138
400
<1 = 75
What is the measure of angle 6?
<6 = 105
400
These angles are on opposite sides of a transversal that crosses parallel lines and are between the other two lines. They have congruent angle measures.
Alternate Exterior Angles
400
The corresponding angles are equal when this is true.
Two parallel lines cut by a transversal
500
<3 = 2x + 17 and <6 = 78 + 3x.
What is the measure of angle 3?
<3 = 17
500
If <5 = 4m + 23 and <2 = 6m + 32, what is <1?
m = 12.5
<1 = 73
500
These angles are on the same side of the transversal are between the other two lines. They are supplementary angles. Also called consecutive interior angles.
Same-Side Interior Angles
500
From two angles that are supplementary, given angle x and and the other is... Hint: (x-180)
The supplement