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Geometry: TX > Chapter 7: Properties of Special Parallelograms > Section Exercises 7.4 > Exercise 25

Find the lengths of the diagonals of rectangle WXYZ
WY = 6x - 7
XZ = 3x + 2
The length of each diagonal is units

1 Answer

11 votes

Answer:

√(45x²-72x+53)

Explanation:

When you insert diagonals, two rightangled triangles are formed.

To find the length of the diagonals, we put the rectangles into pythagorus's theorem:

a²=b²+c²

a²=(6x-7)²+(3x+2)²

a²=36x²-84x+49 + 9x²+12x+4

a²=45x²-72x+53

a=√(45x²-72x+53)

User Ivan Gabriele
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