Answer:
I don't agree, because the triangle is dilated, so it's angle measures won't change; only the side lengths will. Two shapes are congruent if they are identical in shape and size. The side lengths of both triangles are not equal in size to each other.
Step-by-step explanation:
4. B is the answer
5. A is the answer ( y is the same , x are the opposite)
6. C
7. D
Answer:
G (3,-4) ; H (8,1)
Step-by-step explanation:
Midpoint formula:
(x₁ + x₂ / 2 , y₁ + y₂ / 2)
For G (Points B and A):
(3 + 3 / 2 , 1 + (-9) / 2)
(6/2 , -8 / 2)
(3,-4)
For H (Points B and C):
(3 + 13 / 2 , 1 + 1 / 2)
(16 / 2 , 2 / 2)
(8,1)
We can use the Сosine formula to solve this problem.
<span>First we must find the third side (АС) of the triangle:
</span>

<span>
The smallest angle of the triangle lies opposite the smallest side, so we need to find m</span>∠C.

Now we can use Bradis's Table (I don't know the name in English, maybe Trigonometric Table?) to find m∠C:
m∠С = 38°42' = 38.7°
Answer: 38.7°
<span>I hope this helps</span>