Segment Addition & Angle Addition

Flashcard
•
Mathematics
•
9th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the Segment Addition Postulate?
Back
The Segment Addition Postulate states that if point B is between points A and C, then AB + BC = AC.
2.
FLASHCARD QUESTION
Front
Define Angle Addition Postulate.
Back
The Angle Addition Postulate states that if point B is in the interior of angle AOC, then m∠AOB + m∠BOC = m∠AOC.
3.
FLASHCARD QUESTION
Front
What does it mean for two angles to be complementary?
Back
Two angles are complementary if the sum of their measures is 90 degrees.
4.
FLASHCARD QUESTION
Front
What does it mean for two angles to be supplementary?
Back
Two angles are supplementary if the sum of their measures is 180 degrees.
5.
FLASHCARD QUESTION
Front
Back
Combine like terms: 3x + 15 = 33. Then, subtract 15 from both sides: 3x = 18. Finally, divide by 3: x = 6.
6.
FLASHCARD QUESTION
Front
What is the formula for finding the measure of an angle when given its complementary angle?
Back
If angle A is complementary to angle B, then m∠A + m∠B = 90 degrees. Thus, m∠A = 90 - m∠B.
7.
FLASHCARD QUESTION
Front
What is the formula for finding the measure of an angle when given its supplementary angle?
Back
If angle A is supplementary to angle B, then m∠A + m∠B = 180 degrees. Thus, m∠A = 180 - m∠B.
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