# Geometry

Basic Concepts of Geometry

Lesson 1: Points, Lines, and Planes
Lesson 2: How to Name Angles
Lesson 3: How to Measure Angles
Lesson 4: Definition and Names of Polygons
Lesson 5: Parts of a Triangle
Lesson 6: Types of Triangles According to Sides and Angles
Lesson 7: Lines, Rays, and Segments
Lesson 8: Meaning of Collinear and Coplanar
Lesson 9: Congruence of Segments
Lesson 10: Congruence of Angles
Lesson 11: Complementary and Supplementary Angles
Lesson 12: Adjacent Angles and Linear Pairs
Lesson 13: Vertical Angles – Definition and Proof
Lesson 14: Parallel, Perpendicular, and Skew Lines

Angle Sum Theorems

Triangle Congruence

Lesson 1: Introduction to Triangle Congruence
Lesson 2: Minimum Conditions for Triangle Congruence
Lesson 3: The SSS Congruence
Lesson 4: The ASA Congruence
Lesson 5: The SAS Congruence
Lesson 6: Sample Proof Using SSS Congruence
Lesson 7: Sample Proof Using ASA Congruence
Lesson 8:  Sample Proof Using SAS Congruence
Lesson 9: Leg Leg Congruence (LL Congruence)
Lesson 10:  Leg Angle Congruence (LA Congruence)
Lesson 11: AAS Congruence and its Proof
Lesson 12: Hypotenuse Angle Congruence

Area

Surface Area

Lesson 1: Surface Area of a Cube
Lesson 2: Surface Area of a Rectangular Solid
Lesson 3: Surface Area of a Cylinder
Lesson 4: Surface Area of a Cone
Lesson 5: Surface Area ofa Sphere

Volume

Lesson 1: Introduction to the Concept of Volume
Lesson 2: Volume of a Rectangular Solid Part 1
Lesson 3: Volume of a Rectangular Solid Part 2
Lesson 4: Volume of a Cube Part 1
Lesson 5: Volume of a Cube Part 2
Lesson 6: Volume of a Pyramid Part 1
Lesson 7: Volume of a Pyramid Part 2
Lesson 8: Volume of a Cylinder Part 1
Lesson 9: Volume of a Cylinder Part 2
Lesson 10: Volume of a Cone Part 1
Lesson 11: Volume of a Cone Part 2
Lesson 12: Volume of a Sphere