How do you find the measure of angles without a protractor?
2 answers:
Answer:
(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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Question is incomplete. Here is the complete question.
A city employee paints curbs iin parking lots and replaces road signs. It takes 0.5 hour to paint a parking lot curb and 2.5 hours to replace a road sign. The function below can be used to find c, the number of parking lot curbs the employee paints when he replaces r road signs in a 40-hour workweek.
If the employee painted 20 curbs in one week, how many road signs did he replace that week?
a) 20 b) 30 c) 0 d) 12
Answer: d) 12
Step-by-step explanation: In one week, the employee painted 20 curbs.
c is the number of curbs painted in one week, so: c = 20
r = 12
In one week, the employee replaced 12 road signs.