I <em>think</em> the correct answer is A, but please do not be upset with me if it is incorrect.
42 cm because if you divide 210 and 1260 it will make 6 so u just multiply it by 7 and u get 42
A = -599 if I read the question correctly
The lengths of sides a and c add to 9 cm, the length of side b.
In a triangle, the the sum of the lengths of any two sides must be greater than the the length of the third side. These dimensions do not make a triangle.
Is this really what you meant? Why did you use capital A for a side? Or is A an angle, and it measures 6 deg, not 6 cm?
Answer:
ΔEDC CNBD
Step-by-step explanation:
The triangles show AAA, which cannot be used to demonstrate congruency
