Since it's an isoceles triangle, AB = AD. So, by Pythagoras' Theorem:
Area of a triangle is given by . Here, your height and base are the same length so:
I have a right-angled isosceles triangle with hypotenuse c = 100mm. I'm being asked to calculate:
Workings including answer would be appreciated. I've spent too much time reading up on Pythagorean Theorem, and getting way too confused.
- length of AB in mm
- area of triangle ABD in sq mm