Curated Video
Angle Construction
This video provides instruction on how to construct an angle bisector for a given angle.
Curated Video
Line Segment Construction
This video shows how to construct congruent line segments using a compass and a straightedge.
Curated Video
Constructing Segments and Angles
In this video, you will learn how to construct congruent line segments and congruent angles. To complete constructions in mathematics, you will need only two tools: a compass and a straightedge.
Curated Video
Congruent Figures and Symmetry
A video entitled “Congruent Figures and Symmetry” which models how to determine if figures are congruent and where lines of symmetry can be drawn.
Curated Video
Transformations: Congruent or Similar Images
In this video, the teacher explains the four types of transformations in math - translation, reflection, rotation, and dilation. They then use a given problem to demonstrate how to identify a transformation that would result in a similar...
Curated Video
Using Angle Facts
In this video, the teacher uses angle facts to solve math problems. The students are given a diagram with intersecting lines and angles, and they are asked to write algebraic equations to find the values of X and Y. The teacher walks...
Curated Video
Solving for X in Right Triangles using the Sine Ratio
In this video, we learn about solving for X in triangles using the sine ratio. By comparing the ratios of the length of the side opposite an acute angle to the length of the hypotenuse in right triangles, we can determine the value of X....
TMW Media
Geometric Proofs: Part 3 of 3 of learning to solve proofs
This video contains 1 proof to solve. Geometric Proofs, Part 6
Curated Video
Identifying Congruent Figures
In this video, students will learn how to identify congruent figures by comparing their segments and angles. They will understand that congruent means having the same length, measure, or size. The video explains the symbol used to...
Curated Video
Using Similarity Criteria to Find the Distance Across a Canyon
In this lesson, students learn how to solve real-world problems involving similarity criteria. Using the example of finding the distance across a canyon, they apply the vertical angle theorem and angle-angle similarity postulate to...
Curated Video
Finding Missing Measures in Triangles
In this video, the teacher explains how to find missing measures in triangles using congruence and similarity criteria. They cover different congruence criteria, such as side-side-side and angle-side-angle, as well as similarity criteria...
Brian McLogan
Geometry - How to Write a Proof of Congruent Triangles Using AAS
👉 Learn how to prove that two triangles are congruent. Two or more triangles are said to be congruent if they have the same shape and size. There are many postulates and theorems to determine whether two triangles are congruent. They...
Curated Video
Classifying Quadrilaterals by Describing Properties
It's not enough to just consider the number of sides in a quadrilateral, we must also consider the congruence of sides, the types of angles formed, and the presence of parallel or perpendicular lines. Using a square as an example, we...
Curated Video
GCSE Secondary Maths Age 13-17 - Geometry & Measures: Parallel Lines - Explained
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...
Brian McLogan
Proving Parallel Lines with Angle Relationships
👉 Learn about converse theorems of parallel lines and a transversal. Two lines are said to be parallel when they have the same slope and are drawn straight to each other such that they cannot meet. In geometry, parallel lines are...
Curated Video
Understanding Multiplication as Area: Using a Multiplication Table
In this lesson, students will learn how to represent products as areas using a multiplication table. They will understand that the product of two factors can be found by matching the row and column of the multiplication table.
Brian McLogan
How to use the pythagorean theorem to find the missing length of a kite
👉 Learn how to solve problems with kites. A kite is a four-sided shape (quadrilateral) with two equal pairs of adjacent sides and the diagonals are perpendicular. Some of the properties of kites are: each pair of adjacent sides are...
Brian McLogan
Using a Two Column Proof to Prove Two Sides of a Triangle are Equal
👉 Learn how to prove that two triangles are congruent. Two or more triangles are said to be congruent if they have the same shape and size. There are many postulates and theorems to determine whether two triangles are congruent. They...
Curated Video
Classifying Triangles by Examining Properties
In this video, students will learn about the concept of angles and how they determine the classification of a triangle. The video explains the different types of triangles, such as acute, obtuse, isosceles, equilateral, and scalene,...