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-BARSIC- [3]
3 years ago
11

Which of the following could not be a value of n?13O A. 7B. 10C. 13O D. 222

Mathematics
2 answers:
gladu [14]3 years ago
8 0
The triangle inequality says that the sum of the the two shorter sides of a triangle must be greater than the third side.
So try and see which one of the options does not satisfy the triangle inequality.
ZanzabumX [31]3 years ago
7 0
N cannot be 22. It can be proved by the theory of triangle, the sum of any two sides of triangle must be greater than the another third side.
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In the figure CD is the perpendicular bisector of AB . If the length of AC is 2x and the length of BC is 3x - 5 . The value of x
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Answer

Find out the value of x .

To proof

SAS congurence property

In this property two sides and one angle of the two triangles are equal.

in the Δ ADC and ΔBDC

(1) CD = CD (common side of both the triangle)

(2) ∠CDA = ∠ CDB = 90 °

( ∠CDA +∠ CDB = 180 ° (Linear pair)

as given in the diagram

∠CDA  = 90°

∠ CDB = 180 ° - 90°

∠ CDB = 90°)

(3) AD = DB (as shown in the diagram)

Δ ADC ≅ ΔBDC

by using the SAS congurence property .

AC = BC

(Corresponding sides of the congurent triangle)

As given

the length of AC is 2x and the length of BC is 3x - 5 .

2x = 3x - 5

3x -2x =5

x = 5

The value of x is 5 .

Hence proved


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