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Sum of the three angles of a triangle is...

Sum of the three angles of a triangle is .............. .

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The sum of three altitudes of a triangle is ........... Than its perimeter.

Write the following statements as formulas Sum of the three interior angles of a triangle is 180^(@) .

State whether true or false Sum of the three exterior angles of a triangle is 180^(@)

The sum of three altitudes of a triangle is ...... The sum of its three sides.

State whether the following statement is true or false: The sum of the interior angles of a triangle is 180^@ .

An exterior angle of a triangle is equal to the two ............. opposite angles.

Solve the following: In an isosceles triangle, the base angles are equal. The vertex angle is 40^@ . What are the base angles of the triangle? (Remember, the sum of three angles of a triangle is 180^@ ).

MBD-Lines and Angles-Exercise
  1. A triangle can have two obtuse angles

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  2. An exterior angle of a triangle is equal to the sum of the two interio...

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  3. Sum of the three angles of a triangle is .............. .

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  4. An exterior angle of a triangle is equal to the two ............. oppo...

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  5. An exterior angle of a triangle is always .................... than ei...

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  6. A triangle cannot have more than ............ right angles

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  7. A triangle cannot have more than ............ obtuse angles.

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  8. Sum of the angles of a quadrilateral is ................ .

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  9. In fig. AB and CD intersect each other at point O. If angleAOC + ang...

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  10. In fig. POQ is a line, anglePOR = 4x and angleQOR = 2x then the valu...

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  11. In the given fig. if angleAOC + angleBOD = 75^@ then the value of an...

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  12. In the fig. value of y is :

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  13. In the given fig. the value of x is :

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  14. In fig. , anglePOR and angleQOR form a linear pair if a -b = 80^@ then...

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  15. In fig. angleXYZ = 64^@ and XY is produced to point P. If ray YQ bis...

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  16. In fig. , b is more than one-third of a right angle than a. The value...

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  17. In fig. n - x = 3^@ then values of x and n are :

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  18. For parallel lines the sum of interior angles on the same side of a tr...

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  19. In fig. q II r and p is transversal. If angle1 and angle2, 3 : 2 the...

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  20. In fig. the values of x and y are :

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