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GeoBasics2.2 part 1

Autor:Mark Brouwer

Find three angles that sum to 180°

The crucial premise to prove that the interior angles of a triangle sum to two, right angles

Select any three angles that you know add up to 180°

Marqueu on calgui
  • A
  • B
  • C
  • D
  • E
Comprova la meva reposta (3)

Select all pairs of angles that are supplementary

Marqueu on calgui
  • A
  • B
  • C
  • D
  • E
  • F
Comprova la meva reposta (3)

GeoBasics2.2: I can prove that the interior angles of a triangle sum to two, right angles

Proving Interior Angles of a Triangle

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