Answer:
AC = 3.06
Step-by-step explanation:
Answer:
(1,-2) is the final answer of finding the midpoint of the line joining points
Step-by-step explanation:
Answer:
C)
Step-by-step explanation:
We are given that





We have to find the additional fact which proves that triangle RST and triangle WXY are congruent.
In triangle RST
(Triangle angles sum property)
Substitute the values then we get







When two triangles are congruent then each part of one triangle is congruent to its corresponding parts of another triangle.
Therefore, if 
Then, 
Therefore, 


Hence, option C is correct.
To prove that it is a parallelogram, remember that the definition of a parallelogram is a quadrilateral with two pairs of parallel sides. Therefore, one way to prove it is a parallelogram is to verify that the opposite sides are parallel. From algebra, remember that two lines are parallel if they have the same slope.