ProveIt! Two-Column Proofs Practice Tool

Proof: Triangle Sum Theorem 2

P = x $\^o$

R = 2x $\^o$

S = (3/4)x $\^o$

R = 96 $\^o$

P = x $\^o$

P +

R +

S = 180 $\^o$

R = 2x $\^o$

R = 2 * 48 $\^o$ ;

R = 96 $\^o$

S = (3/4)x $\^o$

(4/15) * (15/4)x $\^o$ = (4/15) * (180 $\^o$ ); x $\^o$ = 48 $\^o$

x $\^o$ + 2x $\^o$ + (3/4)x $\^o$ = 180 $\^o$ ; (15/4)x $\^o$ = 180 $\^o$