Question

How can the measure of each angle of a regular quadrilateral be determined?

Answer 1

`90^o`
(You need to be more specific)

Explanation:

Assuming you are actually referring to a regular quadrilateral, that actually means a *square. This means all 4 sides are equal, `90^o`. However, for every other quadrilateral you have to be more specific, as there are many cases. The important thing to know is that the sum of all 4 angles is equal to `360^o`.