FTCE General Knowledge Math Practice Test 2025 – 400 Free Practice Questions to Pass the Exam

The correct answer is a regular polygon. A regular polygon is defined as a polygon that has all its sides of equal length and all its interior angles equal. This quality allows regular polygons to be symmetrical and provides them with a consistent shape regardless of how many sides they possess.

For example, an equilateral triangle, which is a type of triangle with all three sides and angles equal, is a specific case of a regular polygon. Similarly, a square is a four-sided regular polygon. However, the term "regular polygon" encompasses all shapes that fit this criterion, including triangles, quadrilaterals, pentagons, and more.

The other options refer to specific types of triangles with varying characteristics. An isosceles triangle has at least two sides that are equal in length, while a scalene triangle has all sides of different lengths. Both of these types do not meet the criterion of having all sides and angles equal, which is essential for identifying a regular polygon. Thus, the broad definition of a regular polygon accurately captures those attributes across multiple shapes.