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ana2896
23.10.2019 •
Mathematics
Which piece of additional information can be used to prove △cea ~ △cdb?
a) ∠bdc and ∠aed are right angles
b) ae ≅ ed
c) △bdc is a right triangle
d) ∠dbc ≅ ∠dcb
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Ответ:
Answer-
The correct answer is
∠BDC and ∠AED are right angles
Solution-
In the ΔCEA and ΔCDB,
As this common to both of the triangle.
If ∠BDC and ∠AED are right angles, then![m\angle E=90=m\angle D](/tpl/images/0341/7526/82a7d.png)
Now as
∠BCD = ∠ACE and ∠BDC = ∠AED,
∠DBC and ∠EAC will be same. (as sum of 3 angles in a triangle is 180°)
Then, ΔCEA ≈ ΔCDB
Therefore, additional information can be used to prove ΔCEA ≈ ΔCDB is ∠BDC and ∠AED are right angles.
Ответ:
just multiply 8 until you make it to 200 or the closest around 200
8 x 25 = 200