Triangle Inequality Theorem of One Triangle

• Triangle Inequality Theorem of One Triangle


  Any side of a triangle must be shorter than the other two sides added together.
• The third side is between the sum and difference of the two sides
• The larger the angle, the longer the side opposite to it
• Exterior Angles


  The angle between any side of a shape, and a line extended from the nest side. They are linear pair, which means they are supplementary (forms 180 degrees)
• Exterior Angles Theorem


  The measure of an exterior angle of a triangle is greater than the measure of either of its remote interior angles
• The exterior angle is equal to the sum of the two remote interior angles