tiffanyb2
tiffanyb2 tiffanyb2
  • 25-09-2017
  • Mathematics
contestada

Someone please help me

A) 90 degrees
B) 45 degrees
C) 110 degrees

Someone please help me A 90 degrees B 45 degrees C 110 degrees class=

Respuesta :

heere01
heere01 heere01
  • 25-09-2017
okay so! firstly, all straight lines measure to a total of 180 degrees, so all the angles you see will add up to 180 degrees! it tells you angles DEF and DEC are right angles, so you know that angles FEA and BEC are going to be congruent! it tells you that angle FEA is 20 degrees, therefore BEC is also 20 degrees.
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