at least one angle is acute.
what is the first step of indirectly proving this statement?

Question

at least one angle is acute. 
 what is the first step of indirectly proving this statement?

anonymous · Answer

let's take atleast one angle is not acute

aroub · Answer

asume that we have a atleast one a ngle is not acute / indirect proof assumption

anonymous · Answer

k thanks, . and i have another one! it says the figure is a triangle. what is the first step of incirectly proving this staement?

anonymous · Answer

$$Let's \ assume \ that\  an\ angle\ of\ a\ triangle\ is\ not\ an\ acute\ angle$$

aroub · Answer

u have to say something abt the triaangle ( i think)

anonymous · Answer

like..what?

aroub · Answer

its right , acute ... anything

anonymous · Answer

is that a theorem?

anonymous · Answer

no..

aroub · Answer

the lesson is abt indirect proof right?

anonymous · Answer

i guess...do yu want the answer choices?

aroub · Answer

yes please

anonymous · Answer

assume the figure does not have three sides
b) assume the figure is a triangle
c)assume the figure has three sides
d)assume the figure is not a triangle

anonymous · Answer

if it doesn't contains three sides, its not a triangle

anonymous · Answer

so whats the answer?

aroub · Answer

u can assume c and d

aroub · Answer

no sry only d and b and c are the same thing

anonymous · Answer

whats the correct one...?

aroub · Answer

d

anonymous · Answer

its d

anonymous · Answer

ok thanks yall. :) i appreciate it