Answer:
a) corresponding angles of similar polygons are congruent
b) corresponding sides of similar polygons are proportional
c) a triangle is a polygon
Step-by-step explanation:
By <em>definition</em>, similar polygons have congruent corresponding angles and proportional corresponding sides.
A triangle is a polygon, so two triangles will be similar if they have congruent corresponding angles and proportional corresponding sides.
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For an n-sided polygon, one only needs to show the conditions are met for n-1 angles and sides. Those will determine the measures of the final angle/side.
Answer: x = 20, y = -15
Step-by-step explanation:
Since we already know that 
, we can just substitute in that value of y into the other equation:
with the value of x, we can find the value of y:
A. You would be able to prove it by SSS. One side is already said to be congruent and the other is shared by both.
Answer:
f(x)=-x2
Step-by-step explanation:
I believe the first one has a vertex at (-4, 0), the second at (4, 0), the third at (4, -4). The only remaining answer is the last one.
The minimum number of gallons Shell will need is 15.
