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yan [13]
3 years ago
9

I could really use your help , 25 POINTS!!

Mathematics
1 answer:
In-s [12.5K]3 years ago
8 0

since line AB and CD make all right angles (given) angles 6+7+8 will equal 90 degrees.


According to the verticle angles rule:

angle 2 is equal to angle 6

angle 3 is equal to angle 7

angle 4 is equal to angle 8.


which proves that angle 2+4+7=90 degrees

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