Ohio Assessments for Educators (OAE) Mathematics Practice Exam

Disable ads (and more) with a membership for a one time $2.99 payment

Prepare for the Ohio Assessments for Educators Mathematics Exam. Utilize flashcards, multiple-choice questions, and detailed explanations. Optimize your study efforts and ace your exam!

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!

Practice this question and more.

What term describes angles that sum to make a straight angle?

Adjacent angles
Complementary angles
Vertical angles
Supplementary angles

The correct answer is: Supplementary angles

The term that describes angles that sum to make a straight angle is supplementary angles. Supplementary angles are defined as two angles whose measures add up to 180 degrees. A straight angle itself measures exactly 180 degrees, so any two angles that combine to form it fit this definition. For instance, if one angle measures 110 degrees, the supplementary angle would measure 70 degrees because 110 + 70 equals 180 degrees. This understanding is crucial when working with different angles in geometry, as identifying supplementary angles helps in various geometric proofs and constructions. Adjacent angles could refer to angles that share a common side and vertex, but they do not necessarily sum to 180 degrees. Complementary angles are those that add up to 90 degrees, and vertical angles are formed when two lines intersect and are always equal to each other but do not pertain to the sum of 180 degrees.