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Naddika [18.5K]
3 years ago
9

∆ABC and ∆FDE are congruent by the criterion. (Use the three-letter abbreviation without spaces.)

Mathematics
2 answers:
Anastasy [175]3 years ago
6 0

Answer:

x = 11, y = 8

Step-by-step explanation:

ΔABC and ΔFDE are congruent by the postulate SSS

Equate the congruent sides in the 2 triangles

BC = ED, that is

x + 3 = 14 ( subtract 3 from both sides )

x = 11

-------------------------------------

DF = AB, that is

x - y = 3 ← substitute x = 11

11 - y = 3 ( subtract 11 from both sides )

- y = 3 - 11 = - 8 ( multiply both sides by - 1 )

y = 8

Nutka1998 [239]3 years ago
5 0

Answer:

The value of x is 11 and the value of y is 8.

Step-by-step explanation:

It is given that ∆ABC and ∆FDE are congruent.

The corresponding parts of congruent triangle are congruent.

AB=FD                       (CPCTC)

3=x-y                 .... (1)

BC=DE                       (CPCTC)

x+3=14

Subtract 3 from both the sides.

x=14-3

x=11

The value of x is 11.

Put x=11 in equation (1).

3=11-y

Add y on both the sides.

3+y=11

Subtract 3 from both the sides.

y=11-3

y=8

The value of y is 8.

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