The measure of angle BD is 60 degrees.
Angle BD is a right angle because it has a 90 degree measure, and it is also a right angle because the sum of its parts is 180°.
In order to find the measure of angle BD, we first need to find the measures of angles A and C.
Angle BAC is equal to 60 degrees because it is an exterior angle of the triangle. This means that the sum of the interior angles must be 180 degrees (since there are three sides). So if you subtract 60 from 180, you get 120 degrees for angle ACB.
Now we can use this information to find out about angle BD by subtracting 120 from 180 degrees: 180-120=60.
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Last modified: September 4, 2022