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...

In this video, the teacher explains how to solve problems involving congruent triangles using congruence criteria. The three types of criteria discussed are side-side-side, side-angle-side, and angle-side-angle. The teacher also provides...

👉 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...

👉 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...

👉 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...

👉 Learn about the included angles of a triangle. An included angle of a triangle is the angle between two sides of a triangle. An included side of a triangle is the side between two angles. To show that two triangles are congruent by the...

This video is a lecture on how to draw trigonometric graphs using the unit circle. The lecturer explains how to visualize sine, cosine, and tangent graphs by examining the relationships of the trigonometric ratios with the sides of right...

It describes the method of finding the Area of Polygon by splitting it in triangle, square, rectangle, quadrilateral, trapezium and parallelogram with solved problems.

Master How to find the area and perimeter of a triangle given three points

This nugget includes Applications of the Properties of Parallelograms.

👉 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...

👉 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...

👉 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 lesson on triangle similarity and indirect measurement, students will learn how to find missing side lengths and use angle angle similarity to solve problems. Through real-world examples and step-by-step explanations,...

In this video we will discover how to find the missing side of a right angle triangle using SOHCAHTOA. You should already know which side is the opposite, adjacent and hypotenuse. In part 1 we discovered that sin, cos and tan are ratios...

In this video lesson, students will learn how to find the height of a building using the angle-angle criterion for similar triangles. The teacher explains the concept of similar figures, including corresponding angles and corresponding...

👉 Learn how to classify triangles. A triangle is a polygon with three sides. Triangles are classified on the basis of its angles or on the basis of its side lengths. The classification of triangles on the bases of its angles are: acute,...

This video provides an introduction to the sine function and its importance in trigonometry. The video discusses how the sine function is used to calculate the ratios of lengths and angles in triangles, and introduces the key terms of...

👉 Learn how to evaluate the six trigonometric functions given the value of one of the trigonometric functions. When given the value of one of the trigonometric functions of an angle, we can evaluate the values of the other trigonometric...

👉 Learn how to evaluate the six trigonometric functions given some constraints. When given the value of one trigonometric function, we can use a right triangle with one of its legs on the x-axis and the other leg, perpendicular to the...

👉 Learn how to evaluate trigonometric functions using the special right triangles. A right triangle is a triangle with 90 degrees as one of its angles. A special right triangle is a right triangle with the angles 30, 60, 90 degrees or...

👉 Learn how to solve for the length of the sides and the measures of the angles of a triangle using the law of sines. The law of sines is used in determining the length of the opposite side to a known angle measure or the measure of the...

👉 Learn how to solve for the length of the sides and the measures of the angles of a triangle using the law of sines. The law of sines is used in determining the length of the opposite side to a known angle measure or the measure of the...

👉 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...