Set Notation
What type of angle is displayed?
Reflex
Unions of Sets
Write A ∪ B in set notation.
A = {1, 4}
B = {2, 4}
A (/// 1 ///(// 4 //)/// 2 ///) B
What is the size of the angle marked y?
76 degrees
What type of angles are angles A and B?
Corresponding angles
Unions of Sets
Write A ∪ B in set notation.
A = {1, 2, 3, 4, 5}
B = {1, 3, 6, 9}
AND write the answer in set notation.
A (/// 2, 4, 5 ///(// 1, 3 //)/// 6, 9 ///) B
A ∪ B = {1, 2, 3, 4, 5, 6, 9}
What type of angles are marked green?
Alternate angles
Set Notation
What is the symbol for "is a member of?"
E
Unions of Sets
Write A U B for the following set
A= {Summer months}
B= {Months beginning with the letter 'J'}
X (//////////)
Find the angles marked X and Y.
X= 50 degrees and Y = 130 degrees