Q.1. What is the sum of exterior angles of a triangle?
We know that the sum of exterior angles of a polygon is always 360°. The sum of exterior angles of a triangle is 360°.
Q.2. What is the angle form by straight line?
The straight line always form a angle of 180°.
Q.3. How would you define an exterior angle property of a triangle?
An exterior angle of a triangle is equal to sum of opposite interior angles.
Q.4. Does an exterior angle of a triangle is smaller than either of its interior opposite angles?
No, an exterior angle of a triangle is greater than either of its opposite interior angles.
Q.5. What do you mean by the linear pair axiom?
If a ray stands on a line, then the sum of the two adjacent angles so formed is 180° and vice-versa. This property is known as linear pair axiom.
Q.6. What would be the measure of exterior angle for each vertex of equilateral triangle?
120° (=60°+ 60°).
Q.7. If the exterior angle of a triangle is 90°, then what would be the opposite interior angles, supplementary or complementary?
Complementary
Q.8. If the sum of interior opposite angles of a triangle is 130°, then what would be the measure of its exterior angle?
Sum of interior opposite angles = Exterior angle Exterior angle = 130°.
Q.9. What is the condition of exterior angle of a triangle?
The exterior angle of a triangle is equal to the sum of opposite interior angles.
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