Home
Class 10
MATHS
Thales theorem is given by a greek mathe...

Thales theorem is given by a greek mathematician. According to this theorem, if a line is drawn parallel to one side of a triangle then it divides the other two sides in the same ratio. This theorem is also known as Basic Proportionality Theorem.

Here, the value of x is :

A

20 cm

B

15 cm

C

5 cm

D

10 cm

Text Solution

Verified by Experts

The correct Answer is:
A
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • SAMPLE PAPER 6

    EDUCART PUBLICATION|Exercise SECTION C|10 Videos

  • SAMPLE PAPER 6

    EDUCART PUBLICATION|Exercise SECTION- A|20 Videos

  • SAMPLE PAPER 6

    EDUCART PUBLICATION|Exercise SECTION- C |10 Videos

  • SAMPLE PAPER 5

    EDUCART PUBLICATION|Exercise PART - B (SECTION - V) |4 Videos

  • SAMPLE PAPER 7

    EDUCART PUBLICATION|Exercise PART - B (SECTION - V) |8 Videos

Similar Questions

Explore conceptually related problems

Basic proportionality Theorem or Thales Theorem - If a line is drawn parallel to one side of a triangle intersecting the other two sides; then it divides the two sides in the same ratio.

Theorem 6.1 : If a line is drawn parallel to one side of a triangle to intersect the other two sides in distinct points, the other two sides are divided in the same ratio.

Knowledge Check

  • If the line DE is drawn parallel | to the base BC of a triangle ABC by Intersecting the other two sides, then which of the following is the CORRECT equation for this case.

    A
    `(AB)/(DB) = (AC)/(EC)`
    B
    `(AD)/(AB) = (DB)/(EC)`
    C
    `(AD)/(DB) = (EC)/(AE)`
    D
    `(AD)/(DB) = (AE)/(EC)`

    • Similar Questions

    Explore conceptually related problems

    Prove that if a line is drawn parallel to one side of a triangle to intersect the other two sides in distinct points, then the other two sides are divided in the same ratio.

    'If a line is drawn to one side of a triangle to intersect the other two sides in distinct points, prove that the other two sides are divided in the same ratio.

    If a line is drawn parallel to one side of a triangle to intersect the other two sides in disinct points, the other two sides are divided in the same ratio. Using this theoure. Find EC in if DE||BC.

    Theorem 6.2 : If a line divides any two sides of a triangle in the same ratio, then the line is parallel to the third side.

    Theorem 8.10 : The line drawn through the mid-point of one side of a triangle, parallel to another side bisects the third side.

    Prove that , "If a line parallel to a side of a triangle intersects the remaining sides in two distinct points then the line divides the sides in the same proportion".

    Theorem 6.6 : Lines which are parallel to the same line are parallel to each other.

    Home
    Profile