• #### Parallelogram Properties - Concept

##### Math›Geometry›Polygons
How to identify all of the special properties of parallelograms and use them to solve problems.
• #### Polygon Angle Sum - Problem 2

##### Math›Geometry›Polygons
How to find the number of sides of a polygon when you know the sum of its angles.
• #### Parallelogram Properties - Problem 2

##### Math›Geometry›Polygons
How to find the perimeter of a parallelogram when the sides are given in terms of a variable.
• #### Polygon Angle Sum - Problem 3

##### Math›Geometry›Polygons
How to apply the polygon angle sum theorem when you need to solve for x.
• #### Parallelogram Properties - Problem 1

##### Math›Geometry›Polygons
How to solve for variables when given the angles of a parallelogram in terms of those variables.
• #### Two Column Proofs - Problem 2

##### Math›Geometry›Triangles
How to use a two column proof to show that two angles are congruent in a parallelogram with one diagonal.
• #### Using the Pythagorean Theorem to find a Missing Leg - Problem 3

##### Math›Trigonometry›Pythagorean Theorem
How to use the Pythagorean Theorem to find the surface area of a prism given one of the face diagonals and the lengths of two edges.
• #### Using the Pythagorean Theorem to find a Missing Leg - Problem 3

##### Math›Geometry›Pythagorean Theorem
How to use the Pythagorean Theorem to find the surface area of a prism given one of the face diagonals and the lengths of two edges.