Answer:
mean
Step-by-step explanation:
Answer:
dilation
Step-by-step explanation:
Well, you didn't give an option to choose from. I know that the thing in the middle is a similar symbol. Dilations can prove that both shapes are similar. If LMN dilates to a smaller shape PQR then both shapes are SIMILLAR.
Answer:
Decagon
Step-by-step explanation:
We can use the general equation to determine the sum of interior angles:

Since we know the sum of interior angles (I.A.) is 1440°, we must figure out n - the number of sides and so:

Since n=10 this means that it is a 10 sided shape meaning it's a decagon.
Answer:
x = 70
Step-by-step explanation:
180 - 112 = 68
2x + 2x + 12 + 68 = 360
4x + 80 = 360
4x = 360 - 80
4x = 280
x = 280/4
x = 70
2x = 2*70 = 140
2x + 12 = 2*70 + 12 = 152
180 - 140 = 40
112 + 40 = 152
180 - 152 = 28
112 + 28 = 140