I got the answer by adding the triangles
10)
11)
12)
13) (your answer is incorrect)
14) (your answer is incorrect)
15)
16)
-expression to represent this situation
Answer: In 1 group 57 students
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P.S. Hello from Russia :^)
Given :
The diagonals of rhombus ABCD intersect at E.
∠CAD = 20°.
To Find :
The angle ∠CDA.
Solution :
We know, diagonals of a rhombus bisects each other perpendicularly.
So, ∠DEA = 90°.
In triangle ΔEAD :
∠EAD + ∠AED + ∠EDA = 180°
20° + 90° + ∠EDA = 180°
∠EDA = 70°
Now, we know diagonal of rhombus also bisect the angle between two sides .
So, ∠CDA = 2∠EDA
∠CDA = 2×70°
∠CDA =140°
Therefore, ∠CDA is 140°.
27 x 2363 = 10 which means your anwser is B
Answer:
Range, median & mean .....
