Angles help!?
1.Find the measure of angle BAC if the measure of angle CAD=42 and the measure of angle DAB=86.
A)44
B 64
C)Not enough information
2.Find the measure of angle BAC if the measure of angle BAD=75, the measure of angle BAC=3x and the measure of angle CAD=2x.
A) 30
B) 45
C) 60
3. Find the measure of angle BAC if the measure of angle BAD=68, the measure of angle BAC=2x-3 and the measure of angle CAD=4x+5.
A)19
B) 30
C) 45
4. Ray SU bisects angle RST. The measure of angle RSU=3x-1, the measure of angle UST=2x+13 and the measure of angle RST=6x-2.
A) 12
B) 41
C) 82
Favorite Answer
In #1, DAB is the whole angle and CAD is a part of that angle. Just subtract the part from the whole…86 – 42 = 44.
The rest are done the same way except you solve it algebraically. BAD is the whole and CAD is a part and BAC is a part.
75 = 3x + 2x
75 = 5x
15 = x
BAC = 45
Now, finish your HW>
2) C – 60
3) B – 30
4) A – 12
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