Angle Relationships and Angle Algebra

• 100°
• 80°
• 90°
• 180°

• 100°
• 80°
• 90°
• 180°

• 100°
• 80°
• 90°
• 180°

• 60°
• 120°
• 90°
• 180°

What are complementary angles?

• Angles that add up to 180°
• Angles that add up to 90°
• Angles that are equal to each other
• Angles that are opposite of each other when lines intersect.

• Vertical, 154
• Supplementary, 26
• Complementary, 26
• Adjacent, 46

What are supplementary angles?

• Angles that add up to 180°
• Angles that add up to 90°
• Angles that are equal to each other
• Angles that are opposite of each other when lines intersect

What are vertical angles?

• Angles that are adjacent to each other
• Angles that add up to 180°
• Angles that are opposite of each other when lines intersect
• Angles that add up to 90°

Is it possible to find the complement angle of 103°? If so, what is it? 

• Yes, the complement angle is 77°
• Not possible. 
• Yes, the compliment angle is 83°
• Yes, the complement angle is 13°

• 2x-6=7x+4
• 2x-6+7x+4=90
• 2x-6+7x+4=180
• 2x-6+7x+4=360