Answer:
x = 70
Step-by-step explanation:
Ok first let's find the angle where there is an exterior angle:
180-120=60
Then add this and the other inside known angle and subtract that from 180 to get your answer:
60+50=110
180-110=70
Answer:
1
Step-by-step explanation:
-2m+9=7
-2m=7-9
-2m=-2
m=-2/-2
m=1
-2*1+9=7
-2+9=7
(9-2=7)
m=1
Answer:
A) sum = (180)(20) = 3600°
Step-by-step explanation:
The formula for the sum of interior angles for any polygon is (n-2) x 180° with n being the number of sides the polygon has.
We can just plug in 22 into the equation to get our answer:
(22-2) x 180°
= (20) x 180°
= 3600
Answer:
100
Step-by-step explanation:
It tells us that segment PQ and RQ have equal measurement. This implies angle QRP and angle QPR also have equal measurement. ( The given triangle is an isosceles triangle.)
So that means we know both of those angles at the base of the triangle are 40 degrees.
We know each of the base angles are 40 because the one adjacent to the angle whose measurement is 140 is supplementary to one of the base angles.
So we know the sum of the interior angles of a triangle are 180 degrees.
So we have that we need to solve:
40+40+a=180
80+a=180
Subtract 80 on both sides:
a=180-80
a=100
Answer:
b
Step-by-step explanation:
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