What is the best definition of an exterior angle of a triangle?

What is the best definition of an exterior angle of a triangle?

an angle formed outside a polygon by one side and an extension of an adjacent side; the supplement of an interior angle of the polygon.

What is the measure of exterior angle of a triangle?

The measure of an exterior angle of a triangle is equal to the sum of the measures of the two non-adjacent interior angles. (Non-adjacent interior angles may also be referred to as remote interior angles.)

What are the properties of exterior angles?

Properties of Exterior Angle:

• The exterior angle of a given triangle equals the sum of the opposite interior angles of that triangle.
• If an equivalent angle is taken at each vertex of the triangle, the exterior angles add to 360° in all the cases.

What is outer angle?

The Exterior Angle is the angle between any side of a shape, and a line extended from the next side. Another example: When we add up the Interior Angle and Exterior Angle we get a straight line 180°. They are “Supplementary Angles”.

What is exterior angle property class 7?

An exterior angle of a triangle is equal to the sum of the opposite interior angles. In the above figure, ∠ACD is the exterior angle of the Δ ABC.

What is exterior angle property class 9?

What is the exterior angle property? If a side of a triangle is produced, then the exterior angle so formed is equal to the sum of the two interior opposite angles.

What does exterior angle mean in math?

1 : the angle between a side of a polygon and an extended adjacent side. 2 : an angle formed by a transversal as it cuts one of two lines and situated on the outside of the line.

Which is the exterior angle?

The Exterior Angle is the angle between any side of a shape, and a line extended from the next side. When we add up the Interior Angle and Exterior Angle we get a straight line 180°.

What is exterior angle property class 8?

CBSE NCERT Notes Class 8 Maths Understanding Quadrilaterals. For a polygon, the sum of the exterior angles is always 360°regardless of the number of sides of the polygon. The sum of angles in a linear pair is always 180°.

How do you define exterior angles?

Which is a true statement about an exterior angle of a triangle?

The exterior angles of a triangle are the angles that form a linear pair with the interior angles by extending the sides of a triangle . The sum of the exterior angles of a triangle and any polygon is 360 degrees. The remote angles are the two angles in a triangle that are not adjacent angles to a specific exterior angle.

How many exterior angles are there in a triangle?

An exterior angle of a triangle is an angle formed by one side of the triangle and the extension of an adjacent side of the triangle. FACTS: • Every triangle has 6 exterior angles, two at each vertex. • Angles 1 through 6 are exterior angles.

What is sum of all exterior angles of a triangle?

The sum of all interior angles of a triangle is equal to 180∘ 180 ∘.

What do exterior angles of a triangle add up to?

Answers and explanations. The exterior angle of a triangle is equal to the sum of the two nonadjacent interior angles of the triangle. The angles of a triangle add up to 180 degrees.