
L  Lecture titles for A first course in Geometry  Time  Note 

1  Points Lines & Planes  28:15  
2  More Postulates & Theorems Points, Lines, & Planes  24:44  
3  Segment, Ray, Distance on a Number Line  27:20  
4  Introduction to Angles  32:30  
5  Special Angle Pairs  24:43  
6  Basic Constructions Segment & Angle  11:15  
7  Angle and Segment Bisector Constructions  10:26  
8  Distance Formula & Pythagorean Theorem  22:52  
9  Midpoint Formula  21:24  
10  Perimeter of a Plane Region  32:37  
11  Area of a Plane Region  24:46  
12  Deductive Reasoning If Then Statements  18:27  
13  Intro to 2 Column Geometry Proofs  27:51  
14  Congruent Angles  21:07  
15  Lines Parallel Skew, Angles formed by a Transversal  18:36  
16  Parallel Lines & Transversal Angles  23:02  
17  Proving Lines Parallel  21:34  
18  Parallel & Perpendicular Line Proofs  14:24  
19  Angles of Triangles and Parallel Lines  27:43  
20  Graphing Lines in SlopeIntercept form  13:21  
21  Equations of Lines and Graphing  13:35  
22  Slope and Equations of Lines  14:51  
23  Equations of parallel & perpendicular lines  15:00  
24  Congruent Polygons & Third Angle Theorem  26:24  
25  Congruent Triangles SSS SAS  24:48  
26  Congruent Triangles ASA AAS  15:58  
27  Non Congruence Theorems AAA SSA  8:59  
28  Corresponding Parts of Congruent Triangles are Congruent  10:36  
29  Isosceles & Equilateral Triangle Properties  27:52  
30  Equilateral Equiangular Triangles  19:55  
31  Congruent Right Triangles HL Hypotenuse Leg Theorem  26:05  
32  Triangle Midsegment Theorem  18:21  
33  Proving Midsegment Theorem  15:38  
34  Perpendicular Bisector Theorem  21:34  
35  Angle Bisector Theorem  18:25  
36  Triangle Perpendicular Bisectors & Circumcenter  23:19  
37  Triangle Angle Bisectors & Incenter  8:37  
38  Medians of Triangles & Centroid  17:35  
39  Altitudes of Triangles and Orthocenter  21:36  
40  Triangle Inequality Theorem  19:53  
41  Hinge Theorem Inequalities 2 Triangles  12:07  
42  Polynomial Angle Sum Theorems  22:00  
43  Properties of Parallelograms  19:23  
44  Proving Quadrilaterals are Parallelograms  18:51  
45  Rhombuses, Rectangles, and Squares  25:59  partial summary 
46  More Examples Rhombus & Rectangle  24:20  
47  Properties of Trapezoids & Mid Segment Theorem  18:06  
48  Properties of Kites  19:21  
49  Polygons in Coordinate Plane  26:18  
50  Ratios & Proportions  28:37  
51  Similar Polygons  24:29  
52  Proving Triangles are Similar AA SAS SSS  21:39  
53  Similarity in Right Triangles  31:22  
54  Side Splitter Theorem Proportions in Triangles  16:05  
55  Proportions in Triangles Angle Bisector  15:53  
56  Pythagorean Theorem  17:43  
57  Converse Pythagorean Theorem & Triples  19:23  
58  Special Right Triangles 454590 306090  26:07  
59  Right Triangle Trigonometry Part 1  13:48  
60  Right Triangle Trigonometry Part 2  4:23  
61  Angle of Elevation & Depression Right Triangle Trig  27:21  
62  Area Parallelograms and Triangles  29:19  
63  Area Trapezoid Rhombus Kite  27:28  
64  Area of Regular Polygon Introduction with Hexagon Examples  29:29  interesting 
65  Area Regular Polygons with Trigonometry  22:14  
66  Perimeter and Area of Similar Figures  22:53  
67  Circle Intro and Arc Length  29:47  
68  Sector and Segment Area in Circles  27:25  
69  Segment Area in Circles Quicker Methods  14:45  
70  Geometric Probabilities Length  18:55  
71  Geometric Probabilities Area  20:30  
72  Geometric Probabilities Area  20:30  This is an accidental duplicate lecture, exact same as video 71 
73  Surface Area of a Right Prism  21:34  
74  Surface Area Of a Cylinder  21:30  
75  Surface Area of a Regular Pyramid NonTrig Examples  25:24  
76  Surface Area of a Pyramid with Trigonometry  19:41  
77  Surface Area of a Cone  18:30  
78  Volume of a Prism & Volume of a Cylinder  28:11  
79  Volume of a Pyramid 3 Examples  18:18  
80  Volume of a Cone 3 Examples  19:01  
81  Surface Area of a Sphere & Volume of a Sphere  24:59  
82  Tangent Lines to Circles  27:45  
83  Chords Arcs and Diameters in Circle  32:01  
84  Inscribed Angles in Circles & Tangent Lines  25:54  
85  Angles in Circles Chords Secants Tangents & Arcs  27:35  very interesting 
86  Segment Lengths in Circles with Chords, Secants, & Tangents  18:02  
 Total Time of these Lectures =  1:06:40:53  