Given: zabc and zfgh are right angles; ba || gf; bc gh
prove: a abc afgh
step 1: we know that zabc 2 zfgh because all right angles
are congruent.
step 2: we know that zbac gfh because corresponding
angles of parallel lines are congruent.
step 3: we know that bc gh because it is given.
step 4: a abc afgh because of the
asa congruence theorem.
aas congruence theorem.
third angle theorem.
reflexive property.

answer is 12345678900987654321234567890987654321

step-by-step explanation:

126 maybe. sorry

you are playing an adventure game on your computer. you come across a troll who won't let you pass and there is no other way to get to the other side of the river except over the bridge he is guarding.

the troll is a nerd. he takes great delight in watching people struggle with his problems. very few get them. he only gives you one chance and then he changes the puzzle. you have to solve this one.

before you are four blocks. they are numbered 11,6, -7,21.

he tells that the answer he wants is minus and between -1 and - 2. you can use +, -, ×, ÷   ( and ) as many times as you like or no times at all. you don't like the way he's looking at you, but you need to cross the bridge. what do you do?