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In Triagle ABC , DE is parallel to BC . The measure of < A is 60 degrees and the measure of < DEC is 125 degrees . What is the measure of < B?


Please explain



It’s 62.5 ?
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In Triagle ABC DE is parallel to BC The measure of lt A is 60 degrees and the measure of lt DEC is 125 degrees What is the measure of lt B Please explain Its 62 class=

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ferrybukantoro

Step-by-step explanation:

Since DE is parallel to BC, the mL C = 180Β° -125Β° = 55Β°.

so, the measure of L B = 180Β° - L A - L C =

180Β° - 60Β° - 55 = 65Β°

<DEA

  • 180-125(Linear pair)
  • 55Β°

<C=55Β°

Apply angle sum property

<B

  • 180-(60+55)
  • 180-115
  • 65Β°

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