## anonymous 4 years ago In the following figure, the measure of angle 1 is 9 degrees less than half the measure of angle 2. Find the measures of angle 1 and angle 2.

1. anonymous

|dw:1328516646865:dw|

2. anonymous

do you have it now?

3. anonymous

its the same type of question which u askd first ....apply the same logic.... :)

4. anonymous

yeah, i agree. . .

5. anonymous

Let a and b equal angle 1 and 2 respecitvely. Solve the following for a and b:$\left\{a=\frac{b}{2}-9,a+b=180\right\}$$a=54{}^{\circ},b=126{}^{\circ}$

6. anonymous

How did you get 54?

7. dumbcow

they used substitution since a = (b/2)-9 (b/2)-9 +b = 180 3b/2 = 189 3b = 378 b = 126 a = 180 - 126 = 54