Brian McLogan
Proving Two Triangles are Congruent by a Two Column Proof - Congruent Triangles
👉 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
Determining Similar Triangles Using Angle Measures and the Triangle Sum Theorem
In this video, the teacher explains how to determine if two triangles are similar by comparing their corresponding angles. They also discuss the triangle sum theorem and demonstrate how to find missing angle measures.
Curated Video
Drawing Shapes with Multiple Conditions
In this lesson, students will learn how to create shapes using multiple conditions. They will review key terms such as congruent, parallel, right angle, and quadrilateral. Through examples and step-by-step instructions, they will...
Brian McLogan
Labeling corresponding parts and proportions of sides of similar figures
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 sides...
Brian McLogan
How to use a truth table and counter example to determine the truth value of a statement
👉 Learn how to determine the truth or false of a conditional statement. A conditional statement is an if-then statement connecting a hypothesis (p) and the conclusion (q). If the hypothesis of a statement is represented by p and the...
Brian McLogan
Can vertical angles be complementary
👉 Learn how to define angle relationships. Knowledge of the relationships between angles can help in determining the value of a given angle. The various angle relationships include: vertical angles, adjacent angles, complementary angles,...
Brian McLogan
How to Prove Congruent Triangles Using SAS - Congruent Triangles
👉 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...
Brian McLogan
Proving Congruence of Two Triangles by SSS - Congruent Triangles
👉 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
Understanding Dilations and Similar Triangles
In this video, the teacher explains how to determine if two triangles are similar under dilation. They review the properties of dilation and similar figures, such as proportional corresponding sides and congruent corresponding angles.
Curated Video
Solving Problems with Congruence Criteria
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...
Brian McLogan
Given two similar triangles determine the values of x and y for the angles
👉 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...
Brian McLogan
Geometry - How to show two triangles are similar using AA with parallel 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...
Brian McLogan
How to write a proportion of lengths and corresponding angles for two triangles
👉 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...
Brian McLogan
How to find the missing value using the diagonals of a rectangle
👉 Learn how to solve problems with rectangles. A rectangle is a parallelogram with each of the angles a right angle. Some of the properties of rectangles are: each pair of opposite sides are equal, each pair of opposite sides are...
Brian McLogan
What is an Included Angle - Congruent Triangles
👉 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...
Brian McLogan
Using the Hinge Theorem to Compare Sides of a Triangle - Congruent Triangles
👉 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)...
Curated Video
Finding Missing Edge Lengths on Composite 3D Prisms
In this video, the teacher explains how to identify missing edge lengths on composite 3D prisms by locating parallel edges. They use examples of rectangles and rectangular prisms to demonstrate how parallel sides have the same length.
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Application of the Properties of Parallelograms
This nugget includes Applications of the Properties of Parallelograms.
Math Fortress
Geometry: Measurement of Angles (Level 7 of 9)
In this video we will go over more challenging examples involving congruent angles and algebraic expressions.
Brian McLogan
How to solve for y using similarity and proportions
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 sides...
Brian McLogan
When provided a kite determine the missing values
👉 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
How do two tangents line compare if they run through the same point
Learn how to solve problems with tangent line. A tangent line to a circle is a line that touches the circle at exactly one point. The tangent line to a circle makes a right angle with the radius of the circle at the point of its...
Curated Video
Dilations: A Mathematical Change in Size
This video lesson introduces dilations. Dilations are a transformation that changes the size of a figure by enlarging it by a scale factor greater than one or by reducing it by a scale factor less than one. Real world examples are...
Curated Video
Finding the Height of a Building using Similar Triangles
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...