# interior and exterior angles worksheet answer key

where \textcolor{red}{n} is the number of sides. The measure of an exterior angle of a triangle is equal to sum of the measures of opposite interior angles. Exterior angle : Ð ACX Opposite interior angles : Exterior angle = Sum of opposite interior angles 2x+30! Check them out below. Having the ability to rearrange equations will help with interior and exterior angle … + 90! Work out the size of the interior angle, x. Rule: Interior and exterior angles add up to 180\degree. Some of the worksheets for this concept are Interior and exterior angles, Angle relationship interiorexterior s1, 4 the exterior angle theorem, Relationship between exterior and remote interior angles, 6 polygons and angles, Exterior angles of a triangle 3, Name period gp unit 10 quadrilaterals and p, Exterior angles of a triangle 1 directions. C 2x+ ! Having the ability to rearrange equations will help with interior and exterior angle questions. Free worksheet(pdf) and answer key on the interior angles of a triangle. You can & download or print using the browser document reader options. Worksheet will open in a new window. = 130!
Note: You can find the interior angle of a regular polygon by dividing the sum of the angles by the number of angles. Question 2: The shape below is a regular octagon. Interior And Exterior Angles Answer Key - Displaying top 8 worksheets found for this concept.. Now we have figures/expressions for each interior angle, so we write the sum of them equal to 360 in equation form: Collecting like terms on the left-hand side, we get, Then, if we subtract 334 from both sides we get the answer to be.

Interior And Exterior Angles Answer Key - Displaying top 8 worksheets found for this concept. The sum of all the exterior angles will equal 360\degree. So, we get, \text{interior angle CDB } = 180 - (y + 48) = 132 - y, \text{interior angle CAB } = 180 - 68 = 112. Now we know the other 3 interior angles, we get that. Found worksheet you are looking for?