26 Videos for "parallelogram"

Writing a Good Definition  Concept
Math › Geometry › Geometry Building Blocks
How to write a good definition that does not have a counterexample. 
Deductive Reasoning  Concept
Math › Geometry › Reasoning, Diagonals, Angles and Parallel Lines
How to define deductive reasoning and compare it to inductive reasoning. 
Area With Determinants  Problem 1
Math › Precalculus › Systems of Linear Equations and Matrices
How to compute the area of a triangle using a determinant. 
Cyclic Quadrilaterals and Parallel Lines in Circles  Problem 2
Math › Geometry › Circles
How to calculate the measure of an arc created by a cyclic parallelogram. 
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. 
Area With the Cross Product  Problem 3
Math › Precalculus › Systems of Linear Equations and Matrices
How to compute the area of a triangle in xyzspace using vectors formed from two of its sides.