Answer: 888,000
Step-by-step explanation:
Base: 600 x 600 = 360,000
600 x 440 x 2 (there is 4 triangles and 2 makes 1 square. So there is 2 pairs so times 2)= 528,000
360,000 + 528,000= 888,000
No, this is not valid. In the picture below,

is a vertical angle with

. But

is not
Answer:
-31, -26, -5
Step-by-step explanation:
Answer:
I'm fairly positive the answer is 90 degrees.
Answer:
b
Step-by-step explanation: