<Dd> T = r r a r b r c . (\ displaystyle T = (\ sqrt (rr_ (a) r_ (b) r_ (c))).) </Dd> <P> In 1885, Baker gave a collection of over a hundred distinct area formulas for the triangle . These include: </P> <Dl> <Dd> T = 1 2 (a b c h a h b h c) 1 / 3, (\ displaystyle T = (\ frac (1) (2)) (abch_ (a) h_ (b) h_ (c)) ^ (1 / 3),) </Dd> <Dd> T = 1 2 a b h a h b, (\ displaystyle T = (\ frac (1) (2)) (\ sqrt (abh_ (a) h_ (b))),) </Dd> <Dd> T = a + b 2 (h a − 1 + h b − 1), (\ displaystyle T = (\ frac (a + b) (2 (h_ (a) ^ (- 1) + h_ (b) ^ (- 1)))),) </Dd> <Dd> T = R h b h c a (\ displaystyle T = (\ frac (Rh_ (b) h_ (c)) (a))) </Dd> </Dl> <Dd> T = 1 2 (a b c h a h b h c) 1 / 3, (\ displaystyle T = (\ frac (1) (2)) (abch_ (a) h_ (b) h_ (c)) ^ (1 / 3),) </Dd>

Can there be more than one right angle in a triangle