Classifying triangles exterior angle theorem isosceles and equilateral triangles proving triangles congruent triangle angle sum triangles and congruence constructions angle bisector constructions. Triangle angle sum theorem triangle exterior angle theorem objectives state the triangle angle sum theorem and solve for an unknown angle in a triangle classify triangles based on measures of angles as well sides state the triangle exterior angle theorem and solve for an unknown exterior angle of a triangle triangle angle sum theorem the.

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### The triangle sum theorem is also called the triangle angle sum theorem or angle sum theorem.

**Geometry worksheet triangle sum and exterior angle theorem**. Angles in a triangle worksheets contain a multitude of pdfs to find the interior and exterior angles with measures offered as whole numbers and algebraic expressions. Triangle angle sum the exterior angle theorem triangles and congruence sss and sas congruence asa and aas congruence sss sas asa and aas congruences combined. Test and worksheet generators for math teachers.

Find the measure of angle a. The exterior angle theorem says that an exterior angle of a triangle is equal to the sum. All worksheets created.

Microsoft word worksheet triangle sum and exterior angle doc author. The following diagram shows the exterior angle theorem. The exterior angle is angle text acd.

View homework help triangle sum and exterior angle theorem worksheet with key from math geometry at walled lake central high school. Free geometry worksheets created with infinite geometry. Worksheet triangle sum and exterior angle theorem name.

This free worksheet contains 10 assignments each with 24 questions with answers. Find the measure of each angle. An exterior angle of a triangle is equal to the sum of the two opposite interior angles.

X 24 32 180 sum of angles is 180 x 56 180 x 180 56 124 worksheet 1 worksheet 2 using triangle sum theorem. J a2a0d1o1 y bkeu5tsam dspo8f 2tvw7adraer mlylqcb d a va sl dl 2 ir 3ihg7hutus x erle 9sse ergv le2d p 9 c omka2dce h nwjituh r ihnzf 4ibnqintveu cgueo7mfeter 9yb. X m 0 sqwhwmm 4 2 worksheet triangle sum and exterior angee.

2 worksheet by kuta software llc kuta software infinite geometry name the exterior angle theorem date period. Learn to apply the angle sum property and the exterior angle theorem solve for x to determine the indicated interior and exterior angles. Printable in convenient pdf format.

21 1 22 2 23 3 24 4 25 5 26 6. Scroll down the page for more examples and solutions using the exterior angle theorem to solve problems. Find the value of x in the following triangle.

The exterior angle and the adjacent interior angle the one connected to it always add up to 180 because together they form a line. X x x 57 43 50 x 53 62 80 65 x 80 50 44 x title. A little side note.

All the angles inside the triangle are interior angles.

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