MR. Organic Chemistry Tutor, thank you for another great video/lecture on Two Columns Proofs which includes Triangles, Medians and Altitudes. For this topic, I follow the Two Columns Proofs step by step, however the proof changes for different examples. For all students, the theoretical part of Geometry should increase with every proof that is written from start to finish.
Actually at 8:13 you def of an altitude says that it is perpendicular then you have to use another step to say that they are right angles using the def of perpendicular seg and the you will say that they are congruent using the Right angles Theorem; ALl right angles are 90 degrees and are congruent.
Hi...! I have a question. It's similar to the first one. The given are same but I need to prove that BD⊥AC. Do you know how to prove it...? I'll be glad if you answer this question. Oh btw, the question is from: Daniel C. Alexander, Geralyn M. Koeberlein-Elementary Geometry for College Students-Cengage Learning (2014) Page 165, no. 4
MR. Organic Chemistry Tutor, thank you for another great video/lecture on Two Columns Proofs which includes Triangles, Medians and Altitudes. For this topic, I follow the Two Columns Proofs step by step, however the proof changes for different examples. For all students, the theoretical part of Geometry should increase with every proof that is written from start to finish.
Median from midpoint, altitude from right angle
Actually at 8:13 you def of an altitude says that it is perpendicular then you have to use another step to say that they are right angles using the def of perpendicular seg and the you will say that they are congruent using the Right angles Theorem; ALl right angles are 90 degrees and are congruent.
You could also say the base angles are congruent because it’s an isosceles triangle
TYSMMMMMM!!!!!!!!!
nice video 1st
Hi...!
I have a question. It's similar to the first one. The given are same but I need to prove that BD⊥AC. Do you know how to prove it...? I'll be glad if you answer this question.
Oh btw, the question is from:
Daniel C. Alexander, Geralyn M. Koeberlein-Elementary Geometry for College Students-Cengage Learning (2014)
Page 165, no. 4