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What is the value of the missing angle, y in the figure below?

Rachel is playing a game of ping pong. The ball hits the center of the table, as shown in the diagram. Angle X, angle Y , and the inside angle together form a straight angle. Angle X and angle Y have the same measure. What is the measure, in degrees, of angle Y?

Write an equation, in simplest form, to find the value of x. (NO SPACES; ALL LOWER CASE VARIABLES!!)

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.

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

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°

What is the supplement angle to 42°?

• 48°
• 138°
• 100°
• Not possible

What is the complement angle to 12°?

• 78°
• 68°
• 168°
• 90°

_{These are Complementary angles. Find x.}

• 15
• 25
• 75
• 90

If angle ∠ABD is 67°. What is ∠DBC?

• 180°
• 90°
• 67°
• 23°