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Mathematics, 26.06.2019 04:30 kaadenday3629
Complete the proof of the exterior angle theorem. given: ∠4 is an exterior angle of △abc. prove: m∠1+m∠2=m∠4 statement reason 1. ∠4 is an exterior angle of △abc. 1. 2. ∠3 and ∠4 form a linear pair. 2. 3. ∠3 is supplementary to ∠4. 3. 4. m∠3+m∠4=180° 4. 5. 5. triangle sum theorem 6. m∠1+m∠2+m∠3=m∠3+m∠4 6. 7. 7.
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Complete the proof of the exterior angle theorem. given: ∠4 is an exterior angle of △abc. prove: m...
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