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lingling123 lingling123
  • 12-07-2016
  • Mathematics
Answered

Angles ​A​ and ​B​ are supplementary. If ​m​∠​A​ = 45°, find ​m​∠​B​.

A45°
B145°
C135°
D15°

Verified Answer :

apologiabiology
apologiabiology apologiabiology
  • 12-07-2016

supplementary means they add to 180

a+b=180
a=45
45+b=180
minus 45 both sides
b=135

answer is C

Answer Link
olemakpadu
olemakpadu olemakpadu
  • 12-07-2016

If Angles are supplementary, means they both add up to 180 degrees.

A + B = 180°

45 + B = 180°

B = 180° - 45°

B = 135°

Option C.

Answer Link

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