This geometry video tutorial explains how to identify the location of the incenter, circumcenter, orthocenter and centroid of a triangle. The incenter can be found be drawing the 3 angle bisectors of a triangle and identifying the point of intersection. The incenter always lie inside of a triangle. The incenter is the center of the circle that is inscribed in a triangle. The location of the centroid of a triangle can be identified by the intersection of the three medians. The orthocenter of a triangle can be located by finding the intersection of the three altitudes of a triangle. For an acute triangle, the orthocenter lies inside of the triangle. For a right triangle, it lies on the right triangle. For an obtuse triangle, the orthocenter lies outside of the triangle. The circumcenter of a triangle can be found by the intersection of the three perpendicular bisectors. The circumcenter is the center of the circle that is circumscribed about the triangle.
Circles - Area, Circumference, Radius:
https://www.youtube.com/watch?v=D4nGkWOPb6M
Circles - Chords, Radius, & Diameter:
https://www.youtube.com/watch?v=Bczg2VIDfhE
Lines, Rays, Line Segments, & Angles:
https://www.youtube.com/watch?v=oeO8f0taQDA
2 Column Proofs - Cong. Segments:
https://www.youtube.com/watch?v=cboityRIf4Q
Triangle Congruence - SSS, SAS, ASA:
https://www.youtube.com/watch?v=jWHOF6cFbpw
Central Angles and Circle Arcs:
https://www.youtube.com/watch?v=PUNHdOl-E_w
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Tangent Lines and Secant Lines:
https://www.youtube.com/watch?v=XWqP9T7-HXM
Circles - Central and Inscribed Angles:
https://www.youtube.com/watch?v=nd46bA9DKE0
Tangent Tangent Angle Theorems:
https://www.youtube.com/watch?v=c3NOVIRyuVw
Inscribed and Circumscribed Polygons:
https://www.youtube.com/watch?v=lvS4dNlqQAc
Power Theorems - Chords, Secants, & Tangents:
https://www.youtube.com/watch?v=KFV70dj5OMw
Circle Theorems:
https://www.youtube.com/watch?v=GppOSNTi5OA
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Two Column Proofs With Circles:
https://www.youtube.com/watch?v=_PT7WpRj8ro
Circles Review - Geometry:
https://www.youtube.com/watch?v=tJSjTiJeO94
Distance Between Point and Line in 2D & 3D:
https://www.youtube.com/watch?v=5BDrdI3rdQY
Area of a Triangle With Vertices:
https://www.youtube.com/watch?v=70zQzMPNIKQ
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Coordinate Geometry:
https://www.youtube.com/watch?v=PXnAKcBipKM
Geometry Review - Study Guide:
https://www.youtube.com/watch?v=KtZai86htng
Geometry Final Exam Review:
https://www.youtube.com/watch?v=puxjcvBL2IE
Final Exams and Video Playlists:
https://www.video-tutor.net/
Full-Length Videos and Worksheets:
https://www.patreon.com/MathScienceTutor/collections