Question

write the term that best completes each statement. 1. the interior angles of a triangle is 180°. 2. the states that the measure of an exterior angle of a triangle is equal to the sum of the measures of the two remote interior angles of the triangle. 3. the are the two angles that are non - adjacent to the specified exterior angle. 4. a(n) is formed by extending a side of a polygon.

Explanation:

1. The sum of the measures of the interior angles of a triangle being 180° is a fundamental triangle - angle - sum property.
2. The exterior - angle theorem states that the measure of an exterior angle of a triangle is equal to the sum of the measures of the two non - adjacent interior angles.
3. When an exterior angle of a polygon is formed by extending a side, the two non - adjacent interior angles to that exterior angle are related to it in a specific way.
4. An exterior angle of a polygon is formed by extending a side of the polygon.

Answer:

1. Triangle - angle - sum property
2. Exterior - angle theorem
3. Non - adjacent interior angles
4. Exterior angle