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Q: Are the angles of a triangle considered to be supplementary?

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No, because the sum of the 3 angles of a triangle always equals 180 degrees. If two angles are supplementary by definition the two together already sum to 180 degrees, leaving no "space" for the third angle.

No. The adjacent angles are supplementary.

If all of the angles add to 180 degrees the figure is a triangle. * * * * * That is if they form a plane figure. Angles that add to 1890 degrees are called supplementary angles.

Yes, adjacent angles are supplementary; however, opposite angles are not.

No, they are equal. Adjacent angles are supplementary in a prallelogram.

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supplementary angles.

No, they are complimentary (add to 90Â°) Supplementary means the two angles add to 180Â°

Two adjacent angles are considered supplementary angles. They aggregate and make an angle that measures 180 degrees.

always

In a right angled triangle, the two non-right angles are complementary, because in a triangle the three angles add to 180°, and 90° has already been taken by the right angle. When two angles add to 90°, we say they "Complement" each other.

No, they are complementary angles. Supplementary angles sum to 180o Complementary angles sum to 90o. The three angles of a triangle sum to 180o. If one is 90o (the right angle), then the other two sum to 180o - 90o = 90o and so are complementary.

No, because the sum of the 3 angles of a triangle always equals 180 degrees. If two angles are supplementary by definition the two together already sum to 180 degrees, leaving no "space" for the third angle.

The 3 interior angles of any triangle add up to 180 degrees.

They are called supplementary angles.

Wouldn't think so, think of a trapezium shaped like a square with a triangle on one side... The angles at one end of the figure are both 90o, and the angles at the other end will be supplementary, but not opposite angles.

No. The adjacent angles are supplementary.

No. All linear pair angles are supplementary, but supplementary angles do not have to be a linear pair.

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