True or False. Vertical angles are congruent.
True. Vertical (Opposite) angles are congruent.
If ∠2 and ∠3 are complementary and ∠2 is 89 degrees, what is ∠3?
1 degree
What vocabulary word describes two angles that are side-by-side?
Adjacent
What is the rule for the side lengths of a triangle in order to make a triangle?
The two smallest sides together must be bigger than the largest side.
Name a pair of corresponding angles?
∠1 corresponds with ∠5
∠2 corresponds with ∠6
∠3 corresponds with ∠7
∠4 corresponds with ∠8
If ∠1 is 135 degrees. What is ∠2?
45 degrees
Name any angle for this protractor
∠_Q_ (Any letter Q any letter)
Based on the sides given, classify the triangle as a scalene, isosceles, equilateral, or not a triangle.
Sides: 10, 10, 10
Equilateral
Name a pair of alternate exterior angles.
∠1 & ∠8
∠2 & ∠7
If ∠1 is 150 degrees, what is ∠8?
150 degrees
Name a pair of adjacent angles
Any angles that are side-by-side (share a common ray and vertex)
Based on the sides given, classify the triangle as a scalene, isosceles, equilateral, or not a triangle.
Sides: 9, 10, and 9
Isosceles
Name a pair of vertical angles.
∠1 is vertical with ∠4
∠2 is vertical with ∠3
∠5 is vertical with ∠8
∠6 is vertical with ∠7
If ∠2 and ∠3 are supplementary and ∠2 is 89 degrees, what is ∠3?
91 degrees
Name two angles that are complementary.
∠BQC & ∠CQD
∠CQE & ∠EQF
∠CQD & ∠DQF
∠AQC & ∠FQG
Based on the sides given, classify the triangle as a scalene, isosceles, equilateral, or not a triangle.
Sides: 2, 9, and 11
Not a triangle
Name a pair of alternate interior angles.
∠3 & ∠6
∠4 & ∠5
If ∠4 is 113 degrees, what is ∠6?
67 degrees
Name two angles that are supplementary.
∠AQ_ & ∠_QG
Based on the sides given, classify the triangle as a scalene, isosceles, equilateral, or not a triangle.
Sides: 8, 3, 6
Scalene