Ines examined the triangle and noticed that segment AD
bisected ∠CAB
. She measured ∠BAD
to be 21 degrees. What is the measure of ∠CAB
in degrees?
(1 point)
The m∠CAB
is
degrees.
Since segment AD bisects ∠CAB, we know that ∠BAD is congruent to ∠CAD. Given that the measure of ∠BAD is 21 degrees, we can conclude that ∠CAD is also 21 degrees.
Since ∠BAD and ∠CAD are congruent, the sum of their measures is equal to the measure of ∠CAB. So, ∠CAB = ∠BAD + ∠CAD = 21 degrees + 21 degrees = 42 degrees.
Therefore, the measure of ∠CAB in degrees is 42 degrees.