Flashcard 13 - Mathematics: Geometric and Spatial Reasoning Flashcard Set for the TSIA2

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The correct answer is:

\[180^{\circ}\]

Explanation:

If two angles add up to \(180^{\circ}\), they are called supplementary angles. For example, the angles \(140^{\circ}\) and \(40^{\circ}\) are supplementary angles because their sum is \(180^{\circ}\) (\(140^{\circ} + 40^{\circ} =180^{\circ}\)).

Note: Complementary angles are two angles that add up to \(90^{\circ}\).

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