FTCE General Knowledge Math Practice Test 2026 - Free Practice Questions and Study Guide

An angle that measures between 0 degrees and 90 degrees is specifically called an acute angle. Acute angles are characterized by their sharpness and are commonly found in various geometric shapes and figures.

In geometric terms, angles that are less than 90 degrees are essential in understanding the properties of triangles, where each angle can either be acute, right, or obtuse. The acute angle is the foundational concept in various geometric theories and applications.

The other terms refer to different types of angles: obtuse angles measure more than 90 degrees but less than 180 degrees, straight angles measure exactly 180 degrees, and oblique angles typically refer to angles that are either acute or obtuse but not right. Therefore, identifying the specific range for acute angles helps in classifying and utilizing angles correctly in both theoretical and practical contexts.