Geometry Proof Perpendicular Lines
Loading...
Loading...
1,332
Loading...
Uploader Comments (drenniemath)
see all
All Comments (2)
-
Lots is wrong here.
1. The Hinge Theorem can't be used to show that angles ABD and ADB are congruent. Hinge Theorem allows for comparison of triangles in which two sides are congruent to two sides and the included angles are not congruent.
2. The Base Angles Theorem can't be used to do it either. Base Angles Theorem assumes that angles are congruent and concludes that sides are congruent. We need to do precisely the opposite.
3. Use SSS to begin, not SAS. It's easier. Lots
Loading...
7:44
Parallel and Perpendicular Linesby MarcWhitaker45,324 views- 8:35
4.2 Triangle Congruence by SSS and SAS - How to Prove Triangles Congurentby MrPilarski14,067 views
- 9:08
Two-Column Proofby TenMarksInstructor3,827 views
- 6:41
Geometry: 3-4 Perpendicular Linesby sirtylertarver1,627 views
- 10:16
Types of line - Intersecting Line, Perpendicular Line, Parallel Line, Coincident Lineby SkyingBlogger1,514 views
- 6:31
Geometry: 5-1 Perpendicular and Angle Bisectorsby sirtylertarver3,974 views
- 6:52
Parallel and Perpendicular Lines - Geometry - 3.3by algebraandgeometySOS484 views
- 3:46
Intro to Geo Part 2 - Euclid's Fifth Postulateby DHSCoachSmith315 views
- 6:50
Geometry - Proving Lines Parallelby MrPilarski1,293 views
- 5:13
Proof: Perpendicular Bisector Theoremby bullcleo11,763 views
- 1:50
Perpendicular Line Proofby mathteacher24141 views
- 4:50
SAS Triangle Congruence Answer to smgprincess9by MrPilarski1,544 views
- 6:29
Geometry - 13 - Proving Parallelogramsby thenewboston688 views
- 6:22
Geometry - Angle Proofsby yaymath11,414 views
- 3:35
Area of Kites and Rhombusesby brightstorm21,824 views
- 6:00
TRI 11 Writing Two Column Proof - Triangle Congruenceby christo98997,042 views
- 2:39
Parallel and Perpendicular Linesby brightstorm2522 views
- 4:47
TRI 13 Using CPCTC in Triangle Proofsby christo98991,054 views
- 0:45
Chad Reed VS James Stewart Georgia Dome 2011by koolasgold728,075 views
- 1:16
Perpendicular Bisector of a Triangle - YourTeacher.comby yourteachermathhelp42,023 views
1) While the Hinge Thm does work when making comparisons between two triangles, the other consequence of it is that given congruent angles within a single triangle the triangle must be congruent. This falls out of the other related topics of "within a single triangle smaller angles are opposite smaller sides.
2) The Base Angle Thm and its converse both hold true; thus you are arguing a semantic point.
3) I can see the SSS on the larger triangles now that you point that out.
drenniemath 8 months ago