Question

1. select all that apply

the red in the image above, making a box, signifies what
that angle measures 90°
it is a right angle
that it is square
m∠ = 90°

Explanation:

In geometry, a box (right angle symbol) at an angle indicates it is a right angle. A right angle measures \( 90^\circ \), so \( m\angle = 90^\circ \), it is a right angle, and the angle measures \( 90^\circ \). The term "square" here is a misnomer for the right - angle symbol, but the other three options are correct as they relate to the definition of a right angle (measures \( 90^\circ \), is a right angle, and \( m\angle = 90^\circ \)).

Answer:

A. That angle measures \( 90^\circ \)
B. It is a Right Angle
D. \( m\angle = 90^\circ \)