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Vertical Angles Theorem: Algebra Proof

作者：Olivia Urban, Steve Phelps, Wendy Sanchez
主題：代數, 角度

Preliminary version

How do we know that angle a + b = 180 degrees and angles b + c = 180 degrees?

勾選所有適當的選項
  • A
  • B
  • C
  • D
核對我的答案 (3)

How do we know that angles a + b = b + c ?

勾選所有適當的選項
  • A
  • B
  • C
  • D
核對我的答案 (3)

How do we know that angles a = c ?

勾選所有適當的選項
  • A
  • B
  • C
  • D
核對我的答案 (3)

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