Question

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.

Answer 1

do you have it now?

Answer 2

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

Answer 3

yeah, i agree. . .

Answer 4

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

Answer 5

How did you get 54?

Answer 6

they used substitution
since a = (b/2)-9

(b/2)-9 +b = 180
3b/2 = 189
3b = 378
b = 126

a = 180 - 126 = 54