R = 804/91
8.835
this is ur answer i how i helped
Answer:
answer is -1 according to calculation
There are 360 degrees in the rhombus which means the equilateral triangles has 180 degrees (because it is half the rhombus and also it is the angle sum of a triangle). It is equilateral meaning all sides and angles are the same so they all must be 60 (180/3)
Now this must mean that angle a is equal to the opposing angle being 60
The polygon that when rotated at 180 degrees about it's center may not be carried onto itself is a quadrilateral. The reason being quadrilateral is not regular in the sense that different sides have different measures.
1. Ratio- 91:21
2. Reduce- the common factor is 7
3. Answer- 13:3
