Question

what is the measurement of this angle? 270° 90° 180°

Explanation:

Step1: Analyze the angle type

The angle shown has two rays forming a right angle - like shape. A right angle is defined as an angle of $90^\circ$.

Step2: Compare with options

• $270^\circ$ is a reflex angle (more than $180^\circ$ and less than $360^\circ$), which doesn't match the shape.
• $180^\circ$ is a straight angle (a straight line), which also doesn't match.
• $90^\circ$ is a right angle, matching the visual of the two rays forming a right - angled corner.

Answer:

$90^\circ$ (the option with $90^\circ$)