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#36620

angles

triangle

geometry

medium

60 sec

In the $x y$ -plane, triangle $A BC$ has a right angle at vertex $A$ . Side $A B$ is parallel to the $y$ -axis, and side $A C$ is parallel to the $x$ -axis. If the length of side $A B$ is equal to the length of side $A C$ , what is the measure, in degrees, of $∠ B$ ?

• Up to 5 characters (6 if negative). Only numbers, decimal (.), fraction (/), negative (-).
• Fractions must be in lowest terms.
• Mixed numbers must be converted to improper fractions.