False because they don't have the same length and shape you know they may be triangle but the their length are different.
180 -20 = 160 so angle FHG equals 160
I assume that by square corners you mean 90 degree angles. if this is the case then there are 2 in a pentagon. Hope I helped :)
Sure.
Can you find a number that goes into both terms, 5k and 35 ?
How about 5 ?
(5k - 35) = 5 times (k - 7) .
