Answer:
ASA postulate: 1 side, 2 angles equal
Step-by-step explanation:
the answer is 18/18 which is the first one
<CFE = 28
<RPQ = 53
1)
<CFE + 152 = 180
<CFE = 180 - 152
2)
Complementary means the angles add up to 90 so:
<RPQ + 37 = 90
<RPQ = 90 - 37
a - 2
Perimeter = side 1 + side 2 + side 3
So
6a + 3 = 2(a + 3) + (3a - 1) + side 3
side 3 = (6a + 3) - (2a + 6) - (3a - 1)
side 3 = 6a - 2a - 3a + 3 - 6 + 1 = a - 2
28 degrees
68 = 2m + 12
56 = 2m
m = 28 degrees
