Answer:
a) 150°
b) 30°
Step-by-step explanation:
It is easier to work the exterior angle first.
<h3>b)</h3>
The sum of exterior angles is 360°. The exterior angle at any vertex of a regular dodecagon will be 1/12 that:
360°/12 = 30° . . . the measure of one exterior angle
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<h3>a)</h3>
The measure of an interior angle will be the supplement of the adjacent exterior angle.
180° -30° = 150° . . . the measure of one interior angle
False idk I’m just doing this to ask another question
Find slope using the slope formula.
m=(y2-y1)/(x2-x1)
m=(-2-0)/(2+6)
m=-2/8
m= -1/4
Knowing y=mx+b, plug in m.
y=(-x/4)+b
Plug in a coordinate pair to find the b value. (Either works)
-2=(-2/4)+b
-2=-1/2+b
-2+1/2=b
-3/2=b
Plug in the b value to give the final equation.
y=(-x/4)-3/2
A would equal 4 because you would first convert the mixed numbers into improper fractions, then move the constant to the right, and finally add the factions
a-2(1/2)=1(1/2)
a-(5/2)=(3/2)
a=(3/2)+(5/2)
a=4
