Answer:
is that question complete?????
X = (-11+9)/2 = -1
y = (0+(-1))/2 = (0-1)/2 = -1/2
midpoint (-1, -1/2)
Is the arrow the length of the rotation? 90 degrees? if so, the second picture is, with the star at the highest point of the other pictures.
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Answer:
x = 57
Step-by-step explanation:
A triangles degrees add up to 180
67 + 56 = 123
180 - 123 = 57
Answer:
Option d is correct.
Both the x and y coordinates of the point on δa'b'c' have opposite signs from the corresponding points on δabc.
Step-by-step explanation:
The rule of 180 degree rotation about the origin is:
![(x, y) \rightarrow (-x , -y)](https://tex.z-dn.net/?f=%28x%2C%20y%29%20%5Crightarrow%20%28-x%20%2C%20-y%29)
Since a Rotation of a point through 180°, about the origin when a point a(h, k) is rotated about the origin through 180° in anticlockwise or clockwise direction.
then, By the rule of 180 degree rotation;
![a(h, k) \rightarrow a'(-h , -k)](https://tex.z-dn.net/?f=a%28h%2C%20k%29%20%5Crightarrow%20a%27%28-h%20%2C%20-k%29)
so, it takes the new position i.e, ![a'(-h , -k)](https://tex.z-dn.net/?f=a%27%28-h%20%2C%20-k%29)
Therefore, both the x and y coordinates of the point on δa'b'c' have opposite signs from the corresponding points on δabc.