Best way to solve this is by using
s=(12+8+17)/2
=18.5
using the formulae
area =43.5
Insert <, >, or = in the appropriate space to make a true statement. |-11 _-8
1 answer:
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x = 80
the sum of the angles round a point is 360°
the 3 angles here must sum to 360°
3x + x - 27 + 67 = 360
4x + 40 = 360
subtract 40 from both sides.
4x = 360 - 40 = 320
divide both sides by 4
x = = 80
thus the 3 angles are 67°, 240° and 53°
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