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Mathematics 15 Online
OpenStudy (barrelracing):

wow im completely lost

OpenStudy (barrelracing):

OpenStudy (barrelracing):

@johnweldon1993

OpenStudy (sweetburger):

Ok we know that 2 angles have to be equivalent because its an isosceles triangle.

OpenStudy (sweetburger):

Which 2 angles are the angles that are equivalent?

OpenStudy (barrelracing):

t and r? @sweetburger

OpenStudy (sweetburger):

yes so they both equal 2x+26. Remeber all the angles of a triangle must add up to 180.

OpenStudy (barrelracing):

ok so what do i do now?

OpenStudy (sweetburger):

Add all of your angles up and set them equal to 180. Then solve for x.

OpenStudy (barrelracing):

so 5x+2+2x+26+2x+26?

OpenStudy (sweetburger):

yes and set that equal to 180.

OpenStudy (barrelracing):

not exaclty sure what you mean. i added them all up and got 9x+54

OpenStudy (sweetburger):

9x+54 = 180. Solve for x. Plug x back into both (5x+2) and (2x+26) this will give you the exact degree measure of each angle

OpenStudy (sweetburger):

What are you confused about @Barrelracing

OpenStudy (barrelracing):

ok i got it. x=180 5(14)+2 = 72 2(14)+26=54

OpenStudy (sweetburger):

Looks like you did it correctly.

OpenStudy (barrelracing):

so m<r =54 m<s=72 m<t=14

OpenStudy (barrelracing):

@sweetburger

OpenStudy (sweetburger):

No, remember 2 of the angels are equivalent.. Also x=14 which is not an angle.

OpenStudy (sweetburger):

angles*

OpenStudy (barrelracing):

ok well how do i get the answers for those angles?

OpenStudy (barrelracing):

@sweetburger

OpenStudy (sweetburger):

You already did 72, 54, 54

OpenStudy (sweetburger):

Remember its an isosceles triangle. angle R and T are equivalent.

OpenStudy (barrelracing):

ok so s is 72?

OpenStudy (barrelracing):

@sweetburger

OpenStudy (barrelracing):

and the others are 54

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