Only acute angles. Is this for your homework?
Let's identify first what a Yield sign is. The Yield sign is the only sign on the road (US) that is in the shape of a upside-down triangle with rounded corners, similarly to the stop sign, the stop sign is the only sign on the road that's in the shape of a octagon (has 8 sides). You'll usually see a Yield sign at an intersection, for instance traffic circles. You're not required to stop at the yield sign but you can if you have too to give way to traffic that doesn't have to stop period. Yield signs are not a sign that you blow through. The yield sign means that "You're not required to stop, but you don't have the right-of-way at this intersection." The yield sign is also less restrictive than the stop sign, you still have to give the right-of-way to other traffic, but you're not required to stop at a yield sign.
There are 4 angles in quadrilateral. 2 angles bisected would yield 2 each 45 degrees angles (or less) and the other 2 angles would yield (bisected ) 45 degrees (or more)!
a stop sign has 5 more corners than a yield sisn
you only have to stop at a yield sign if there is cross traffic - if it would not be safe for you to continue through the intersection. Typically only one road at the intersection will have a yield sign - the other one will either have no sign or a stop sign/light.
yes.
A yield sign is shaped like an upside-down triangle.
Yield to stop sign.
An acute angle is an angle that is less than 90 degrees. The tip of a sharpened pencil is a very narrow acute angle. There are acute angles on a triangular yield sign. The tip of a football is an acute angle.
A stop sign DOES have angles so I pray that you do not drive!
A yield sign.
A stop sign, a One Way sign, and a Yield sign.