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Yuliya22 [10]
3 years ago
9

The figure below shows a rectangle ABCD having diagonals AC and DB. ​

Mathematics
1 answer:
Keith_Richards [23]3 years ago
4 0

Answer:  b) ΔADC ≡ ΔBCD by SAS

<u>Step-by-step explanation:</u>

Step 1: AD = BC                     SIDES are congruent

Step 2: ∠ADC ≡ ∠BCD          ANGLES are congruent

Step 3: DC = DC                    SIDES are congruent

The proof is using Side-Angle-Side (SAS)

Look at the angles in step 2.  These are the triangles you are proving congruency for: ΔADC ≡ ΔBCD

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4 0
4 years ago
What is the mode of the data set? 1, 1, 2, 1, 3, 2, 2, and 3
slavikrds [6]

maybe: Mean

=

2.22

Median =

2

Mode =

1

and

3

Explanation:

Mean:

¯

x

=

1

+

2

+

1

+

2

+

1

+

3

+

3

+

4

+

3

9

=

20

9

=

2.22

Median: First we put the numbers in order from lowest to highest:

1

,

1

,

1

,

2

,

2

,

3

,

3

,

3

,

4

The median is the number that has the central position.

Median

=

2

Mode: it is the number that appears the most times. In this case, both

1

and

3

appear the same number of times, so they are both modes.

hope this helps!

8 0
3 years ago
Read 2 more answers
What would you do in order to write 1/5x +<br> 1/3y = 9 in standard form?
dmitriy555 [2]
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4 0
3 years ago
In this lesson, the graph of a line is used to find which of the following?
Artemon [7]
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6 0
3 years ago
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To prove that DEF congruent DGF by SAS,what additional information is needed
lisabon 2012 [21]

Answer:

∠DFE ≅ ∠DFG

Step-by-step explanation:

we know that

Triangles are congruent by SAS, if any pair of corresponding sides and their included angles are equal in both triangles

In this problem we have that

The pair of corresponding sides that are equal are

EF=GF  and DF (is the same side for both triangles)

The included angle are ∠DFE and ∠DFG

therefore

The additional information needed to prove that triangles DEF and DGF are congruent by SAS is that angles ∠DFE and ∠DFG are equal

so

∠DFE ≅ ∠DFG

8 0
3 years ago
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