What are complementary angles?
Angle Relationships

Flashcard
•
Mathematics
•
7th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
Complementary angles are two angles whose measures add up to 90 degrees.
2.
FLASHCARD QUESTION
Front
What are supplementary angles?
Back
Supplementary angles are two angles whose measures add up to 180 degrees.
3.
FLASHCARD QUESTION
Front
What are vertical angles?
Back
Vertical angles are the angles opposite each other when two lines intersect. They are always congruent (equal in measure).
4.
FLASHCARD QUESTION
Front
If two angles are complementary and one angle measures 30 degrees, what is the measure of the other angle?
Back
60 degrees (90 - 30 = 60).
5.
FLASHCARD QUESTION
Front
If two angles are supplementary and one angle measures 110 degrees, what is the measure of the other angle?
Back
70 degrees (180 - 110 = 70).
6.
FLASHCARD QUESTION
Front
What is the sum of the angles in a triangle?
Back
The sum of the angles in a triangle is always 180 degrees.
7.
FLASHCARD QUESTION
Front
What is the value of x if angle A is 45 degrees and angle B is complementary to angle A?
Back
x = 45 degrees (90 - 45 = 45).
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