The angle we are looking for is between the rays that start at O and pass through points C and E.
Angle Measure: 100^(∘) Classification: Obtuse
Practice makes perfect
Let's first identify the angle we are looking for. The symbol ∠ COE refers to the angle found between the rays that start at O and pass through points C and E.
Examining the protractor, we can see that the ray traveling through C passes through 120^(∘). Also, the ray traveling through E passes through 20^(∘). By the Protractor Postulate, the measure of ∠ COE is the difference between 120^(∘) and 20^(∘).
m ∠ COE: 120^(∘)-20^(∘)=100^(∘)
Now, we can classify the angle using its measure.
