A few days ago

Anonymous

Angles help!?

Could someone please help me with these questions thanks??

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

Top 2 Answers

A few days ago

dpirsq2

Favorite Answer

First, always draw a picture of the angle. I didn’t understand it until I drew a picture and labelled it.

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>

A few days ago

Tom S

1) B – 64

2) C – 60

3) B – 30

4) A – 12

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