Question

which angles are right?

Answer 1

Answer:

right triangle

Step-by-step explanation:

so draw a line like this |_\

Answer 2

For this case we have that by definition, a right angle is one that measures 90 degrees. Equivalently measures $\frac {\pi} {2}.$

The two sides of the right angle are two semirects perpendicular, and the vertex is the origin of said semirects.

Answer:

A right angle is one that measures 90 degrees