Vocab Part I
Complement
or Supplement
or Supplement
Identify the
Angle Relationship
Angle Relationship
Equations +
Angles
Angles
200
Two lines that never intersect.
Parallel Lines
200
What is the supplement of 83o?
97o
200
Given lines m and n are parallel, what is the relationship between ∠3 and ∠6?
Alternate Angles
200
Given lines m and n are parallel, ∠2 = 125o, and ∠7 = 5x. Find x.
x = 25
300
A line that intersects two or more parallel lines.
Transversal
300
What is the complement of 32o?
58o
300
Given lines m and n are parallel, what is the relationship between ∠5 and ∠8?
Vertically Opposite
300
Given lines m and n are parallel, ∠3 = 2x + 40, and ∠7 = 3x + 20. Find m∠3.
∠3 = 80o
400
Two angles that add up to 180 degrees.
Supplementary Angles
400
What is the complement of 44.8o?
45.2o
400
Given lines m and n are parallel, what is the relationship between ∠4 and ∠6?
Cointerior Angles
400
Given lines m and n are parallel, ∠5 = 4x + 15, and ∠4 = 9x. Find m∠5.
∠5 = 27o
500
A pair of opposite, congruent angles formed by two intersecting lines.
Vertically Opposite
500
What is the supplement of 39.2o?
140.8o
500
Given lines m and n are parallel, what is the relationship between ∠4 and ∠8?
Corresponding Angles
500
Given lines m and n are parallel, ∠4 = 5x + 44, and ∠6 = 6x + 48. Find ∠6.
∠6 = 96o