GED Math Practice Test

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Prepare for the GED Math Test with confidence! Engage in a quiz that includes multiple-choice questions covering key math concepts. Strengthen your mathematical skills and increase your chances of passing the GED with our comprehensive resources.

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

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What is a characteristic of complementary angles?

They sum to 180 degrees
They sum to 90 degrees
They are equal in measure
They are both obtuse angles

The correct answer is: They sum to 90 degrees

Complementary angles are defined specifically by the sum of their measures. When two angles are considered complementary, their measures always add up to exactly 90 degrees. For example, if one angle measures 30 degrees, the complementary angle would measure 60 degrees because 30 + 60 = 90. Understanding complementary angles is important in geometry, particularly when solving problems involving right triangles or constructing angle relationships. This definition contrasts other options presented, such as angles summing to 180 degrees, which pertains to supplementary angles instead. Similarly, while complementary angles can indeed be equal in measure (like two 45-degree angles), it is not a defining characteristic, as they can also be different measures that still add up to 90 degrees. Lastly, complementary angles are not restricted to obtuse angles; in fact, both angles must be acute (less than 90 degrees) in order to satisfy the condition of being complementary.