it would be obtuse.
7) Obtuse, I didn't use a protractor, so I'm estimating about 130 degrees.
8) Straight, all straight lines are equal to 180 degrees.
9) Acute, I estimated about 30-40 degrees, again, no protractor used.
acute would be a really small angle, obtuse angle is really big, and lastly im guessing your meaning by straight angle would just be a regular 90 degree angle.
hope this helped;)
An acute angle ("acute" meaning "small") is an angle smaller than a right angle. The range of an acute angle is between 0 and 90 degrees.
The obtuse angle is the smaller angle. It is more than 90° and less than 180°. The smaller angle is an Obtuse Angle, but the larger angle is a Reflex Angle.
Straight angel 180 °
Angle COB is 140 degrees, which is Obtuse
Obtuse means between 90 degrees and 180 degrees, exclusive.
Number 2 obtuse
The measure of ∠COB is 140° which is greater than 90° but less than 180° so it's an obtuse angle.
We can't measure the angles as we do not have the sheet with us.
You can use a protractor to find the angles. You get a protractor when you buy a geometry box.
∠COB is obtuse angle
I attached an image showing how to tell the difference between an acute, obtuse, right, and straight angle.
We can clearly see, just by looking at the image. ∠COB is an obtuse angle
An obtuse angle is greater than 90 degrees.
A right angle is exactly 90 degrees.
A straight angle is exactly 180 degrees.