Mathematics ACT Aspire Practice Test

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

Study for the Mathematics ACT Aspire Test. Use flashcards, multiple choice questions, and detailed explanations. Get prepared for your exam!

Start Multiple Choice Practice Test
Start Flash Cards

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.

Which of the following describes a right angle?

  1. Exactly 45 degrees

  2. Exactly 90 degrees

  3. Exactly 120 degrees

  4. Exactly 180 degrees

The correct answer is: Exactly 90 degrees

A right angle is defined as an angle that measures exactly 90 degrees. This angle is one of the fundamental angles in geometry and is commonly seen in various shapes, including squares and rectangles, where each corner forms a right angle. The other options represent different angles: 45 degrees describes an acute angle, which is less than 90 degrees; 120 degrees is an obtuse angle, which is greater than 90 degrees; and 180 degrees represents a straight angle, which forms a linear pair. Hence, defining a right angle simply as 90 degrees is accurate and aligns with the standard conventions in geometry.

More Questions Like This