Posted by **Beatrice** on Thursday, December 8, 2011 at 8:13pm.

the diagram below shoes a pennant in the shape of an isosceles triangle. the equal sides each measure 13, the altitude is x+7 and the base is 2x.

- geometry -
**Steve**, Thursday, December 8, 2011 at 11:14pm
Draw the figure

x^2 + (x+7)^2 = 13^2

x^2 + x^2 + 14x + 49 = 169

x^2 + 7x - 60 = 0

(x+12)(x-5) = 0

x = 5

sides are 13,13,10

altitude is 12, making the half-triangle a 5,12,13 triangle.

## Answer this Question

## Related Questions

- geometry - A wall pennant is in the shape of an isosceles triangle. Each of the ...
- Geometry - The math club of Ritzy High designed a pennant for the school yacht. ...
- Math - The base of an isosceles triangle is one inch shorter than the equal ...
- Geometry - Do the altitudes of an isosceles triangle go to the midpoints of the ...
- math - a college football pennant is in the shape of an isosceles traingle . the...
- geometry - the base of an isosceles triangle is 18 centimeters long. The ...
- Euclidean Geometry - I am in the 10th Grade and my question is: The base of an ...
- geometry - The perimeter of an isosceles triangle is 42 cm . its base is 2/3 ...
- geometry - The perimeter of an isosceles triangle is 37 in. The lengths of the ...
- math - A banner in the shape of an isosceles triangle has a base that is 2 ...

More Related Questions