Thursday

December 18, 2014

December 18, 2014

Posted by **Brigitta** on Thursday, January 31, 2013 at 10:56pm.

- math -
**Reiny**, Thursday, January 31, 2013 at 11:51pmdid you make a sketch?

I have a large isosceles triangle containing your original trapezium

The sides of the triangle are made up of the segments 10 and 8 for a total length of 18 each

I see a smaller isosceles triangle contained and similar to a larger isosceles triangle

let the smaller base be x

remember the sides of similar triangles are in the same ratio

so....

x/8 = 20/18

x = 8(20/18) = 80/9 or appr. 8.89 cm

- math -
**Brigitta**, Friday, February 1, 2013 at 11:03pmthank u so much!:)

**Answer this Question**

**Related Questions**

Math - 1) The hypotenuse of an isosceles right triangle is 8 cm longer than ...

math - Monique is using similar triangles in her graphic-design project. The ...

Math - Can't figure this out... :( An isosceles trapezium with its longest side ...

Math - Two isosceles triangles have perimeters of 8 and 15 centimeters, ...

geometry - how long are the congruent legs of isosceles triangle if its base ...

geometry - how long are the congruent legs of isosceles triangle if its base ...

geometry - how long are the congruent legs of isosceles triangle if its base and...

math - prove that the diagonals of isosceles trapezium are equal

math - The parallel sides of a trapezium are 6cm and 5cm long and 4cm apart.what...

math - the perimeter of an isosceles triangle is 30 inches. the legs are 1/3 as ...