How do you find the measure of angles without a protractor?

(hope this helps can I pls have brainlist (crown) ☺️)

Step-by-step explanation:

A protractor is the most convenient tool for measuring angles. If you don't have a protractor, you may use the fundamental geometry concepts of triangles to calculate the size of an angle. To solve the equations, you'll need a scientific calculator. Most smartphones include these, but you can also download a free app or use a free online calculator. Whether you're measuring an acute (less than 90 degrees), obtuse (more than 90 degrees but less than 180 degrees), or reflex angle, the calculations you'll need to do are different (more than 180 degrees but less than 360).

Steps:

1.Draw a vertical line connecting the 2 rays of the angle.

2.Measure the length of the adjacent side to find the run.

3.Measure the length of the opposite side to find the rise.

4.Divide rise by run to find the slope of the angle.

5.Use your calculator to determine the degrees of the angle.

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because parallelagram have all 4 angels the same size dependeing and a rectangle and square are oth parallelogram