Which word means 'almost, but not exactly; more or less'?

• A. Straight angle
• B. Acute angle
• C. Equilateral triangle
• D. Approximately

Answer: (D)

Expressing an estimate is the idea here: when you mean “almost, but not exactly; more or less,” you use approximately. It tells someone the number or amount is close to a value without being saying it exactly. For example, there are approximately 25 students means the class is near 25, maybe 24 or 26. Other options describe shapes or exact properties rather than giving a close guess: a straight angle is a 180-degree turn, an acute angle is smaller than 90 degrees, and an equilateral triangle has all sides equal. Since those don’t convey the idea of being near but not exact, the word that fits best is approximately.