Find the measure of ∠c if

∠a = 52x + 30
∠b = 72x + 40
∠c = 92x + 10
∠d = 52x + 20

a)70°
b)80°
c)90°
d)100°

Any 4 sides polygon has total of 360 degree

therefore adding p all angles you got 268x +100= 360

minus 100 on both side 268x= 260

divide 268 on both side you got x around .97

therefore angle C is around 99.25closest answer is D 100

hope this help

You have 2 sides that are 2 cms and you have 6 sides that are 1/2 cm and you have 4 sides that are 1 cm. the smallest sides are 1/2 the medium sized sides are 1 and the smallest are 1/2. so to find the perimeter you have to add them all up together so your answer will be 11 cm's