Exterior Angles of a Triangle
Explore and calculate the exterior angles of triangles with this Grade 6 math worksheet.
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Exterior Angles of a Triangle
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Read each question carefully and answer to the best of your ability. Show your work where necessary.
An exterior angle of a triangle is formed by one side of a triangle and the extension of an adjacent side. The measure of an exterior angle of a triangle is equal to the sum of the measures of its two remote interior angles.
1. If the two remote interior angles of a triangle are 50° and 70°, what is the measure of the exterior angle?
100°
120°
180°
60°
2. The sum of the two remote interior angles is equal to the angle.
3. An exterior angle and its adjacent interior angle always add up to degrees.
4. Draw a triangle and label one of its exterior angles and its two remote interior angles.
5. The exterior angle of a triangle can be acute.
True
False
6. In a triangle, if one interior angle is 65° and its adjacent exterior angle is 115°, what are the measures of the other two interior angles?
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