State whether the following statement is true or false.
180∘ is an example of an obtuse angle.
True
False
An obtuse angle is greater than 90∘and less than 180∘. If the angle is 180∘, then it is called a straight angle.
180º is an example of an obtuse angle.
State whether the following statement is true or false. 90∘ is an example of an obtuse angle.
If one angle of a triangle is greater than 90 degrees, it is known as an obtuse-angled triangle.