Geometry Topics Practice Lessons

Let's explore, identify, and describe the relationship between a circle and a tangent line and why the radius of a circle is perpendicular to the tangent where the radius intersects the circle. ★ Want more FREE weekly math videos? Subscribe Now: ★★ Why Math? Download YOUR Free eBook and sign-up for our FREE weekly newsletter: Understand and apply theorems about circles. Identify and describe relationships among inscribed angles, radii, and chords. Include the relationship between central, inscribed, and circumscribed angles; inscribed angles on a diameter are right angles; the radius of a circle is perpendicular to the tangent where the radius intersects the circle. What is a tangent line to a circle? Why is a tagent line and a radius perpendicular? How many times does a tangent line cross a circle? Image Credit: Emojis provided free by ✔✔✔SUBSCRIBE FOR FREE: ✔✔JOIN OUR MAILING LIST: ✔FOLLOW US ON TWITTER: ✔FOLLOW US ON INSTAGRAM: ✔FOLLOW US ON PINTEREST: ✔LIKE US ON FACEBOOK:

Let's explore, identify, and describe the relationship between a circle and a tangent line and why the radius of a circle is perpendicular to the tangent where the radius intersects the circle. ★ Want more FREE weekly math videos? Subscribe Now: ★★ Why Math? Download YOUR Free eBook and sign-up for our FREE weekly newsletter: Understand and apply theorems about circles. Identify and describe relationships among inscribed angles, radii, and chords. Include the relationship between central, inscribed, and circumscribed angles; inscribed angles on a diameter are right angles; the radius of a circle is perpendicular to the tangent where the radius intersects the circle. What is a tangent line to a circle? Why is a tagent line and a radius perpendicular? How many times does a tangent line cross a circle? Image Credit: Emojis provided free by ✔✔✔SUBSCRIBE FOR FREE: ✔✔JOIN OUR MAILING LIST: ✔FOLLOW US ON TWITTER: ✔FOLLOW US ON INSTAGRAM: ✔FOLLOW US ON PINTEREST: ✔LIKE US ON FACEBOOK:

On this lesson, you will learn everything there is to know about parallel lines cut by transversals and angle relationships including supplementary angles, complementary angles, vertical angles, alternate interior angles, alternate exterior angles, and corresponding angles. This lesson answers the question: How do I find a missing angle? What are supplementary angles? What are complementary angles? What are vertical angles? How can I find vertical angles? How do I find alternate interior angles? How do I find corresponding angles? Be sure to join our mailing list at Subscribe to Our Channel: ✔✔✔SUBSCRIBE FOR FREE: ✔✔JOIN OUR MAILING LIST:

On this lesson, you will learn everything there is to know about parallel lines cut by transversals and angle relationships including supplementary angles, complementary angles, vertical angles, alternate interior angles, alternate exterior angles, and corresponding angles. This lesson answers the question: How do I find a missing angle? What are supplementary angles? What are complementary angles? What are vertical angles? How can I find vertical angles? How do I find alternate interior angles? How do I find corresponding angles? Be sure to join our mailing list at Subscribe to Our Channel: ✔✔✔SUBSCRIBE FOR FREE: ✔✔JOIN OUR MAILING LIST:

On this lesson, we will work through several triangle congruence Geometry Proofs Examples and you will learn how to complete two column proofs and triangle congruence proofs step by step! For more MashUp Math content, visit and join our free mailing list! :) This lesson answers the questions: How can I prove that two triangles are congruent? How can I complete a geometry proof? How do I prove vertical angles are congruent? How do I use CPCTC? How can I study geometry proofs? Be sure to join our mailing list at Subscribe to Our Channel:

On this lesson, we will work through several triangle congruence Geometry Proofs Examples and you will learn how to complete two column proofs and triangle congruence proofs step by step! For more MashUp Math content, visit and join our free mailing list! :) This lesson answers the questions: How can I prove that two triangles are congruent? How can I complete a geometry proof? How do I prove vertical angles are congruent? How do I use CPCTC? How can I study geometry proofs? Be sure to join our mailing list at Subscribe to Our Channel:

On this lesson, you will learn whether or not a square is a rectangle too! Is every square a rectangle? Let's find out! For more MashUp Math content, visit and join our free mailing list! :) This lesson answers the questions: Is a square a rectangle? What is a square? What is the definition of a square? What is a rectangle? What is the definition of a rectangle? What is the difference between a square and a rectangle? Is every square a rectangle? Be sure to join our mailing list at Subscribe to Our Channel:

On this lesson, you will learn whether or not a square is a rectangle too! Is every square a rectangle? Let's find out! For more MashUp Math content, visit and join our free mailing list! :) This lesson answers the questions: Is a square a rectangle? What is a square? What is the definition of a square? What is a rectangle? What is the definition of a rectangle? What is the difference between a square and a rectangle? Is every square a rectangle? Be sure to join our mailing list at Subscribe to Our Channel:

On this lesson on factoring trinomials, you will learn how to factor a trinomial when a is not 1. When the leading coefficient is greater than one, the factoring process (the AC method) is a bit different--let's see why! For more MashUp Math content, visit and join our free mailing list! :) This lesson answers the questions: How do I factor a quadratic when a is not 1? How do I solve a trinomial? How do I solve a quadratic? How do I find factors? What is a trinomial? What is a leading coefficient? How do I find the zeros of a function? How do I find the factors of a number? Be sure to join our mailing list at

On this lesson on factoring trinomials, you will learn how to factor a trinomial when a is not 1. When the leading coefficient is greater than one, the factoring process (the AC method) is a bit different--let's see why! For more MashUp Math content, visit and join our free mailing list! :) This lesson answers the questions: How do I factor a quadratic when a is not 1? How do I solve a trinomial? How do I solve a quadratic? How do I find factors? What is a trinomial? What is a leading coefficient? How do I find the zeros of a function? How do I find the factors of a number? Be sure to join our mailing list at