Instructional Video4:59
Curated Video

The Development of the West

3rd - 8th
Dr. Forrester talks about the Transcontinental Railroad and how it dramatically changed America. She then talks about those who settled in the Great Plains, including ranchers and farmers.
Instructional Video6:23
Brian McLogan

Geometry - How to Write a Proof of Congruent Triangles Using AAS

12th - Higher Ed
👉 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...
Instructional Video4:25
Brian McLogan

What are Congruent Shapes - Congruent Triangles

12th - Higher Ed
👉 Learn how to find the corresponding pairs of congruent triangles. Two or more triangles are said to be congruent if they have the same shape and size. To determine the corresponding congruent parts of a triangle, we use the congruent...
Instructional Video4:21
Brian McLogan

Using Two Congruent Triangles to Find the Value of X and Y

12th - Higher Ed
👉 Learn how to solve for unknown variables in congruent triangles. Two or more triangles are said to be congruent if they have the same shape and size. When one of the values of a pair of congruent sides or angles is unknown and the...
Instructional Video7:11
Brian McLogan

Determining multiple missing values using congruent polygons

12th - Higher Ed
👉 Learn how to solve with similar polygons. Two polygons are said to be similar if the corresponding angles are congruent (equal). When two polygons are similar the corresponding sides are proportional. Knowledge of the length of the...
Instructional Video4:09
Brian McLogan

Determine the Value of your Variables with Congruent Triangles

12th - Higher Ed
👉 Learn how to solve for unknown variables in congruent triangles. Two or more triangles are said to be congruent if they have the same shape and size. When one of the values of a pair of congruent sides or angles is unknown and the...
Instructional Video1:41
Brian McLogan

How to determine all of the measure of angles for an equilateral triangle

12th - Higher Ed
👉 Learn how to find the missing side of a triangle. A triangle is a polygon with three sides. Triangles are classified on the basis of the angles or on the basis of the sides. The classification of a triangle on the basis of the sides...
Instructional Video7:26
Brian McLogan

How to Write a Proof Using SSS Congruence Theorem - Congruent Triangles

12th - Higher Ed
👉 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...
Instructional Video7:22
Brian McLogan

Proving Two Triangles are Congruent by a Two Column Proof - Congruent Triangles

12th - Higher Ed
👉 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...
Instructional Video4:26
Brian McLogan

Proving Congruence of Two Triangles by SSS - Congruent Triangles

12th - Higher Ed
👉 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...
Instructional Video3:19
Brian McLogan

What is an Included Angle - Congruent Triangles

12th - Higher Ed
👉 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...
Instructional Video1:41
Brian McLogan

Using the Hinge Theorem to Compare Sides of a Triangle - Congruent Triangles

12th - Higher Ed
👉 Learn about congruent triangles theorems. Two or more triangles are said to be congruent if they have the same shape and size. There are many methods to determine whether two triangles are congruent. Some of the methods include: (1)...
Instructional Video1:24
Brian McLogan

Using the Converse Hinge Theorem to Compare Angles

12th - Higher Ed
👉 Learn about congruent triangles theorems. Two or more triangles are said to be congruent if they have the same shape and size. There are many methods to determine whether two triangles are congruent. Some of the methods include: (1)...
Instructional Video8:37
Brian McLogan

How to apply the law of sines to find the remaining parts of a triangle

12th - Higher Ed
👉 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...
Instructional Video3:39
Brian McLogan

What is the SAS Congruence Theorem for Triangles - Congruent Triangles

12th - Higher Ed
👉 Learn about congruent triangles theorems. Two or more triangles (or polygons) are said to be congruent if they have the same shape and size. There are many methods to determine whether two triangles are congruent. Some of the methods...
Instructional Video2:35
Brian McLogan

How to Determine if an Angle is Included or Not - Congruent Triangles

12th - Higher Ed
👉 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...
Instructional Video3:00
Brian McLogan

What is the SSS Congruence Theorem for Triangles - Congruent Triangles

12th - Higher Ed
👉 Learn about congruent triangles theorems. Two or more triangles (or polygons) are said to be congruent if they have the same shape and size. There are many methods to determine whether two triangles are congruent. Some of the methods...
Instructional Video3:26
Brian McLogan

What are Congruent Parts of Two Triangles

12th - Higher Ed
👉 Learn how to find the corresponding pairs of congruent triangles. Two or more triangles are said to be congruent if they have the same shape and size. To determine the corresponding congruent parts of a triangle, we use the congruent...
Instructional Video4:39
Brian McLogan

Proving Two Sides are Equal Using CPCTC - Congruent Triangles

12th - Higher Ed
👉 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...
Instructional Video4:59
Brian McLogan

How to Write a Proof for Two Triangles Congruent Under ASA

12th - Higher Ed
👉 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...
Instructional Video4:11
Brian McLogan

What are congruent polygons - Congruent Triangles

12th - Higher Ed
👉 Learn about congruent triangles theorems. Two or more triangles (or polygons) are said to be congruent if they have the same shape and size. There are many methods to determine whether two triangles are congruent. Some of the methods...
Instructional Video2:26
Brian McLogan

How to Use SAS to Prove Congruent Triangles

12th - Higher Ed
👉 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...
Instructional Video4:24
Brian McLogan

Determine Corresponding Parts as Well as an Concurrency Statement - Congruent Triangles

12th - Higher Ed
👉 Learn how to find the corresponding pairs of congruent triangles. Two or more triangles are said to be congruent if they have the same shape and size. To determine the corresponding congruent parts of a triangle, we use the congruent...
Instructional Video2:16
Brian McLogan

How to Determine Congruent Parts of Two Triangles - Congruent Triangles

12th - Higher Ed
👉 Learn how to find the corresponding pairs of congruent triangles. Two or more triangles are said to be congruent if they have the same shape and size. To determine the corresponding congruent parts of a triangle, we use the congruent...