The answer is 4z squared - 3z - 4
a. CPCTC is your answer
CPCTC means that "Congruent Parts of a Congruent Triangle(s) are Congruent"
If ΔBRM ≅ ΔKYZ (given), then every part inside the triangle is ≅ with the corresponding side.
So, for example Line BR will be ≅ with Line KY, etc
hope this helps
Answer:
74 degrees
Step-by-step explanation:
As sum of interior and exterior at a vertex add to 180, subtract 106 from 180 to get 74 degrees
The answer is 6,889. Squared just means the number times itself. In this case, it's 83 x 83. :)