What is 𝑚∠𝐵𝐴𝐶?
What is the measure of angle 𝐵𝐴𝐶?
Well 𝐵 is here, 𝐴 is here, and 𝐶 is here. And this means in order to measure angle 𝐵𝐴𝐶, we’re looking for the size
of this angle here.
Now luckily the whole question has been presented on top of a protractor and better
than that it’s even been properly lined up. We’ve got 𝐴 at the main point here and
then we’ve got the line 𝐴𝐵 mapped along the baseline of our protractor. So all we have to do is start counting at zero and follow up this scale here to
see what angle is measured.
And it goes wonderful notch further than ten. Each of these little notches on a
scale represent one degree. So that’s ten plus one is eleven degrees.
And that’s our answer: the measure of angle 𝐵𝐴𝐶 is eleven degrees.
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