Instructional Video5:06
Curated Video

Finding Missing Sides in Triangles with Parallel Lines

K - 5th
In this video, the teacher explains how to find a missing side of a triangle when it is split by a parallel line. They demonstrate the concept by drawing parallel lines and a transversal, creating corresponding angles.
Instructional Video8:48
Curated Video

Proving the Triangle Midsegment Theorem using Triangle Similarity

K - 5th
In this video, we learn how to find the length of the midsegment of a triangle by using properties of triangle similarity. The video provides a step-by-step explanation and proof of the triangle midsegment theorem.
Instructional Video5:31
Brian McLogan

How to find the length of the sides of a triangle given a ratio

12th - Higher Ed
👉 Learn how to solve with the ratio of sides and angles of a triangle. Given the ratio of the sides of a triangle and the perimeter of the triangle, we can solve for the actual lengths of the triangle. Similarly, when the ratio of the...
Instructional Video2:05
Brian McLogan

Special segments of similar triangles angle bisector

12th - Higher Ed
👉 Learn how to solve with the ratio of sides and angles of a triangle. Given the ratio of the sides of a triangle and the perimeter of the triangle, we can solve for the actual lengths of the triangle. Similarly, when the ratio of the...
Instructional Video5:04
Let's Tute

Pythagoras Theorem Proof - Pythagorean Theorem

9th - Higher Ed
The Pythagoras Theorem says that, for any right angled triangle, the square of the hypotenuse is equal to the sum of the squares of remaining two sides.Out of all the different way of proving it, we will learn it by using the concept of...
Instructional Video2:03
Brian McLogan

How to use SSS proportionality to show two triangles are similar

12th - Higher Ed
👉 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...
Instructional Video2:05
Brian McLogan

How to determine if two triangles are similar using proportions and altitude

12th - Higher Ed
👉 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...
Instructional Video11:27
Curated Video

Similar Figures

9th - 12th
In this video lesson, we will learn the definition of similar figures. Similar figures are figures that are the same shape but different sizes. Similar figures have corresponding sides that are proportional and corresponding angles...
Instructional Video1:42
Brian McLogan

Using Similarity and proportions to find the missing values

12th - Higher Ed
👉 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...
Instructional Video3:26
Brian McLogan

Using similar triangles to find the measure of x

12th - Higher Ed
👉 Learn how to solve for the unknown in a triangle divided internally such that the division is parallel to one of the sides of the triangle. The triangle proportionality theorem states that if a line is parallel to one side of a...
Instructional Video4:07
Brian McLogan

How to use your trig functions to evaluate using the sides of a triangle

12th - Higher Ed
👉 Learn how to evaluate the six trigonometric functions given a right triangle. A right triangle is a triangle with 90 degrees as one of its angles. A right triangle is made up of two legs, which formed the sides of the 90 degrees angle...
Instructional Video2:26
Brian McLogan

How do you determine two triangles are similar using angle angle aa

12th - Higher Ed
👉 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...
Instructional Video3:21
Brian McLogan

How to find the missing side of two similar triangles

12th - Higher Ed
👉 Learn how to solve for the unknown in a triangle divided internally such that the division is parallel to one of the sides of the triangle. The triangle proportionality theorem states that if a line is parallel to one side of a...
Instructional Video3:02
Brian McLogan

Using the midsegment to determine your missing values of a triangle

12th - Higher Ed
👉 Learn how to solve for the unknown in a triangle divided internally such that the division is parallel to one of the sides of the triangle. The triangle proportionality theorem states that if a line is parallel to one side of a...
Instructional Video4:36
Curated Video

Determining Similarity of Acute Triangles by Examining Corresponding Parts

K - 5th
In this video, students learn how to determine if two acute triangles are similar by examining their corresponding parts. They review the concept of similarity transformations and how they preserve shape but may change size.
Instructional Video6:01
Brian McLogan

Facing Up vs Facing Down Congruent Triangles | Can You Solve?

12th - Higher Ed
Facing Up vs Facing Down Congruent Triangles | Can You Solve?
Instructional Video5:35
Tarver Academy

7-6 Dilations and Similarity in the Coordinate Plane - GEOMETRY

12th - Higher Ed
In This Episode, Tyler Teaches Us About Dilations and Similarity in the Coordinate Plane - Geometry
Instructional Video5:57
Brian McLogan

How to determine the similarity of three triangles by drawing the altitude

12th - Higher Ed
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.
Instructional Video2:23
Brian McLogan

How to use the medians of similar triangles to determine the missing length

12th - Higher Ed
👉 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...
Instructional Video6:41
Brian McLogan

Using the geometric mean to determine the missing parts of a triangle

12th - Higher Ed
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.
Instructional Video8:39
Curated Video

GCSE Secondary Maths Age 13-17 - Geometry & Measures: Similar triangles - Explained

9th - 12th
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...
Instructional Video1:48
Brian McLogan

Special segments of similar triangles medians

12th - Higher Ed
👉 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...
Instructional Video6:46
Curated Video

GCSE Secondary Maths Age 13-17 - Geometry & Measures: Scale Factor - Explained

9th - 12th
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...
Instructional Video1:27
Brian McLogan

Geometry - What is the triangle bisector theorem

12th - Higher Ed
👉 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...