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draw two isosceles triangles, ∆abc and ∆adc with common base ac . vertexes b an...
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Mathematics, 15.11.2019 03:31 AutumnJoy12
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draw two isosceles triangles, ∆abc and ∆adc with common base ac . vertexes b and d are in the opposite semi-planes determined by ac . draw the line segment bd . prove: ac ⊥ bd
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