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Elden [556K]
3 years ago
8

Which choice shows three lengths that cannot be the lengths of the three sides of a triangle

Mathematics
1 answer:
Semmy [17]3 years ago
3 0
For triangles Sum of any Two sides should be always more than the length of the Third side.
A) 2cm,8cm,8cm 
8+8=16 >2 True
8+2=10 >8, True
8+2=10 >8, True
B) 2cm,3cm,6cm
2+3=5 > 6 False.  It is impossible in a triangle.
3+6=9 > 2 True
2+6=8 >3 True

The answer is B.

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Calculate the size of angle DBE.6. Calculate the size of angle DBE.
Lina20 [59]
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5 0
3 years ago
I need help finding the answers someone plz help
Harlamova29_29 [7]

Happy New Year from MrBillDoesMath!

Answer:

Proof by ASA congruence postulate. See below

Discussion:

  Fact 1 :     angle A = angle T             (given)

  Fact 2:    The angles on both sides of point X are equal as vertical angles

                 are equal.

From these facts it follows that angle M = angle H (as all plane triangles have 180 degrees). Also  AM = TH  (given) so

   In the left triangle                          In the right triangle

  (angle M, side AM, angle A)  =      (angle H, side TH, angle T)


Hence the triangles have two congruent angles, and congruent sides included between the angles, so they are congruent by  ASA.


Thank you,

MrB

8 0
3 years ago
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