Geometry

Mometrix’s geometry videos are general reviews of the concepts, ideas, and topics that may be presented on an exam. Each of these videos will give a wide-scope review of what a test taker may need to know as they prepare to take a test.

Shapes

• 3D Geometric Shapes
• Congruent Shapes
• Determining a Kite
• Diagonals of Parallelograms, Rectangles, and Rhombi
• Ellipse
• Intro to Parallelograms
• Lines and Planes
• Polygons
• Symmetry

Angles

• Adjacent Angles
• Angles
• Complementary Angles
• Congruent Angles
• Sum of Interior Angles
• Supplementary Angles

Triangles

• Area and Perimeter of a Triangle
• Area of Any Triangle
• Centroid, Incenter, Circumcenter, and Orthocenter
• General Rules of Triangles
• Introduction to Types of Triangles
• Proof that a Triangle is 180 Degrees
• Pythagorean Theorem
• Right Triangle Word Problems
• Similar Triangles

Circles

• Arcs and Angles of Circles
• Area and Circumference of a Circle
• Finding Tangent
• Points on a Circle
• Secants, Chords, and Tangents
• Tangent Lines of a Circle
• The Diameter, Radius, and Circumference of Circles

Area and Perimeter

• Area and Perimeter of a Parallelogram
• Area and Perimeter of a Trapezoid
• Area and Perimeter of a Triangle
• Area and Perimeter of Rectangles and Squares
• Area of a Rectangle with a Semicircle
• Area of a Trapezoid and Rhombus
• How to Find Area and Perimeter
• Length, Width, and Perimeter
• The Diameter, Radius, and Circumference of Circles

Volume and Surface Area

• How to Calculate the Volume of 3D Objects
• How to Find the Surface Area of 3D Shapes
• Volume and Surface Area of a Cube
• Volume and Surface Area of a Prism
• Volume and Surface Area of a Pyramid
• Volume and Surface Area of a Rectangular Prism
• Volume and Surface Area of a Right Circular Cone
• Volume and Surface Area of a Right Circular Cylinder
• Volume and Surface Area of a Sphere

Graphs

• How to Graph a Function
• Hyperbolas
• Line Graphs
• Parabolas

Transformations

• Dilation in Geometry
• Rotation
• Translation

Proofs

• Negation
• Truth Tables

Geometry Formulas Sheet (Free Download)