California Assessment Of Student Performance And Progress (CAASPP) Math Practice Exam

How many degrees are there in a right angle?

45° 90° 180° 360°

Correct Answer:

90°

Explanation:

A right angle is defined as an angle that measures exactly 90 degrees. This is a fundamental concept in geometry, representing a quarter of a full rotation. When two lines or line segments intersect at a right angle, they form a square corner, which is visually recognizable in everyday objects and structures. In the context of angles, 45 degrees represents an acute angle, which is less than 90 degrees, while 180 degrees corresponds to a straight angle, illustrating a half rotation. A full rotation is measured at 360 degrees. Therefore, understanding that a right angle specifically measures 90 degrees is crucial for geometry and is foundational for creating perpendicular lines and understanding more complex geometric concepts.

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