Good Afternoon,
My homework has this diagram in it, and the question is asking me to find the value of "x".
I am not allowed to use a protractor.
The different answers you can choose from are
a. 10°
b.15°
c.20°
d.90°
If someone could answer the question for me, I would be very grateful.
Thank You.
There are 180° in the sum of the angles of one side of a straight line.
The center angle is a right angle (the little box in its corner indicates a right angle), so it contains 90°.
This means that there are 90° left for the two angles of 3x + 10° and x + 20°.
An appropriate equation is: (3x + 10°) + (x + 20°) = 90°.
Can you finish this?