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Define a triangle....

Define a triangle.

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In Geometry, a triangle is a three-sided polygon that consists of three edges and three vertices. The most important property of a triangle is that the sum of the internal angles of a triangle is equal to `180^@`. This property is called angle sum property of triangle.
If ABC is a triangle, then it is denoted as `/_\ABC`, where A, B and C are the vertices of the triangle. A triangle is a two-dimensional shape, in Euclidean geometry, which is seen as three non-collinear points in a unique plane.
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RD SHARMA-TRIANGLE AND ITS ANGLES-All Questions
  1. Fill in the blanks to make the following statements true: Sum of the...

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  2. Fill in the blanks to make the following statements true: Sum of th...

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  3. Define a triangle.

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  4. Write the sum of the angles of an obtuse triangle.

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  5. Can the sum of the two angles of a triangle be less than the third ang...

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  6. If the angle of a triangle are in the ratio 2:1:3, then find the m...

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  7. If A B C D is a rectangle with /B A C=32^@, find the measure of /D B C

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  8. In a parallelogram A B C D diagonals A C and B D intersect at O and A ...

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  9. State exterior angle theorem

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  10. If the side B C of A B C is produced on both sides, then write the...

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  11. In a triangle A B C , if A B=A C\ a n d\ A B is produced to D such tha...

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  12. The sum of two angles of a triangle is equal to its third angle. De...

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  13. In a rhombus A B C D , if /A C B=40^@, then /A D B=(a) 70^@ (b) 45...

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  14. if A B D E and B D F G such that /F G H=125^0 and /B=55^0, find x\ a...

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  15. side B C\ of A B C is produced to point D such that bisectors of /A ...

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  16. If all the three angles of a triangle are equal, then each one of t...

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  17. If two acute angles of a right triangle are equal, then each acute ...

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  18. An exterior angle of a triangle is equal to 100^0 and two interior ...

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  19. If one angle of a triangle is equal to the sum of the other two ang...

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  20. Side B C of a triangle A B C has been produced to a point D such th...

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