Posted by **y912f** on Monday, November 24, 2008 at 2:30pm.

can you please tell me if the points (8,9) (15,2) and (17,4) are the vertices of a right triangle

- trig -
**drwls**, Monday, November 24, 2008 at 3:23pm
The lengths L of three sides are sqrt 98, sqrt 8 and sqrt 106. You can prove that using

L = sqrt[(y2-y1)^2 + (x2-x1)^2]

The pythagorean relationship a^2 + b^2 + c^2 is therefore obeyed, since 98 + 9 = 106.

What does that tell you about the triangle?

You could prove it in other ways, but this appeared to be the simplest.

## Answer this Question

## Related Questions

- trig - can you please tell me if the points (8,9) (15,2) (17,4) are the vertices...
- Algebra - Find the coordinates of the midpoint of the hypotenuse of the right ...
- math - Plot the points A(2,2), B(4,6),C(10,-2)Notice that these points are ...
- math - i have a question in math (( distance between two points )) the vertices ...
- math - I have a question in (( distance between two points )) show that A(4,2), ...
- Geometry - Please answer at least one . PLEASE 1. Triangle XYZ has a right ...
- Algebra - I'm stuck!! Can someone please help me with this problem?? A triangle ...
- trig - Please answer b)only a) If a triangle has angles of 35 and 65 degrees, ...
- Math Geometry - A triangle has vertices P(a,b), Q(c,d), and R(e,f). You are ...
- 7th Grade Geometry - A Rectangle with vertices A B C AND D. The triangle is ...