Math CentralQuandaries & Queries


Subject: geometry
Name: jenniffeir
Who are you: Student

Can a parallelogram have two 45 degree angles and two 75 degree angles?

Hi Jenniffeir,

Think about this: If you draw one of the parallelogram's diagonals, you will always get two triangles:


What is the sum of the interior angles of a triangle? So what should the sum of two triangles be? So, what should the interior angles of a parallelogram add to?


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