Question

HELP! **PROOF I GIVE MEDALS :)
Given:In triangle ABC, ∠ A=135º
Prove:∠B≠45º(write an indirect proof)

Answer 1

actually, <C is given :)

Answer 2

is c 45

Answer 3

depends in ur question
but C cant be 45, because <A = 135
A+C = 180, it is not true because B = 0

Answer 4

oooh ok

Answer 5

if b is not 45 then it must be >0 and <45

Answer 6

ah, that is the answer :)
prove by using contradiction, assuming be right B = 45 degrees

we knowed tha the sum interior angles in triangle = 180
A + B + C = 180
135 + 45 + C = 180
180 + C = 180
C = 0

Answer 7

if C = 0 then it is not a triangle
so, proof that C cant be 0

Answer 8

in other words, in a triangle if the measure <A = 135 then ∠B≠45º

Answer 9

and c>0

Answer 10

oh ok sory I couldn't answer b4 myinternect went topellet

Answer 11

and c must not be 45