CCSS What are equiangular, equilateral and regular polygons

In this video, the teacher explains how to determine if two circles are similar using translations and dilations. They define similarity as having congruent corresponding angles and proportional corresponding sides. The video provides...

This is a tutorial video on how to write equations to solve for the unknown or missing side lengths of right triangles. The video explains the Pythagorean Theorem and the properties of right triangles, such as legs, hypotenuse, and the...

👉 Learn all about the trigonometry of right triangles. A right triangle is a triangle that has 90 degrees as one of its angles. The trigonometric identities of right triangles give us the relationship between the angles of a right...

👉 Learn how to solve with similar triangles. Two triangles are said to be similar if the corresponding angles are congruent (equal). Note that two triangles are similar does not imply that the length of the sides are equal but the sides...

SchoolOnline's Secondary Maths videos are brilliant, bite-size tutorial videos delivered by examiners. Ideal for ages 13-17, they cover every key topic and sub topic covered in GCSE Maths in clear and easy to follow steps. This video...

Learn about the Pythagorean theorem. The Pythagoras theorem is a fundamental relation among the three sides of a right triangle. It is used to determine the missing length of a right triangle. The Pythagoras theorem states that the...

This video covers All About 'Lines & Angles' Such as - Introduction to Lines & Angles - Types of Angles - Theorems

👉 Learn how to determine if a given SSA triangle has 1, 2 or no possible triangles. Given two adjacent side lengths and an angle opposite one of them (SSA or ASS), then there are 3 possible cases: there can be 1 solution, 2 solutions,...

The video is a lecture presentation on triangles, discussing the different types of triangles and their properties. The presenter explains the meaning of the word "triangle," which refers to a shape with three sides, and goes on to...

Master Solving word problems using the law of sines

Learn about the geometric mean of numbers. The geometric mean of n numbers is the nth root of the product of the numbers. To find the geometric mean of n numbers, we first multiply the numbers and then take the nth root of the product.

Shapes are all around song! This is a song about different shapes for kids and toddlers. Children will love watching this shape video and singing along. It is a good video to teach children the different names of shapes. It is a great...

In this video, the teacher explains how to draw geometric shapes using only the lengths of their sides. They demonstrate how to draw triangles with different side lengths and explore the concept of congruent triangles. They also show how...

Learn about the Pythagorean theorem. The Pythagoras theorem is a fundamental relation among the three sides of a right triangle. It is used to determine the missing length of a right triangle. The Pythagoras theorem states that the...

In this video we will discover how to find a missing angle in a right angle triangle, when we already know the lengths of two sides. We use SOHCAHTOA to do this. You should already know what SOHCAHTOA is and how to use it. We saw how to...

SchoolOnline's Secondary Maths videos are brilliant, bite-size tutorial videos delivered by examiners. Ideal for ages 13-17, they cover every key topic and sub topic covered in GCSE Maths in clear and easy to follow steps. This video...

It explains a parallelogram and its properties such as opposite sides and opposite angles are equal and each diagonal divides the parallelogram into two congruent triangles.

👉 Learn how to evaluate an expression with the composition of a function and a function inverse. Just like every other mathematical operation, when given a composition of a trigonometric function and an inverse trigonometric function,...

In this video we are going to look at exterior angles of polygons. Exterior angles are a little strange. They make a straight line with the interior angle, rather than being the whole outside angle. There are a few different ways to...

👉 Learn about the interior and the exterior angles of a polygon. A polygon is a plane shape bounded by a finite chain of straight lines. The interior angle of a polygon is the angle between two sides of the polygon. The sum of the...

In this video, the teacher explains how to draw a Pentagon by connecting five straight sides. The lesson covers the importance of straight lines, closed shapes, and vertices. The teacher dispels common misconceptions about the appearance...

Defining the law of cosines.

👉 Learn how to solve the word problems with trigonometry. Word problems involving angles, including but not limited to: bearings, angle of elevations and depressions, triangles problems etc are solved using trigonometry. To be able to...