9.05 Estimate angles
Lesson
Are you ready?
Being able to compare angles can help us in this lesson. Let's try this problem to review.
Which of these angles is larger?
A
B
Learn
Let's see how we can use angles we know to estimate other angles.
Apply
Question 1
Which angle is equal to $45$45 degrees?
A
B
C
Question 2
Estimate the size of the angle made by the mountains at the center.
Less than $45^\circ$45°
AEqual to $180^\circ$180°
BGreater than $90^\circ$90°
C
Remember!
If we remember some important angles, we can use those to estimate other angles.