Question

Math~ @takikaran

Answer 1

71 because 180-129=51, 51+58=109, 180-109=71

Answer 2

\(\color{#0cbb34}{\text{Originally Posted by}}\) @Takikarin
71 because 180-129=51, 51+58=109, 180-109=71
\(\color{#0cbb34}{\text{End of Quote}}\)
The question is which equations can be used to solve x

Answer 3

oop sorry, so it would be the first one, and the second to last.

Answer 4

\(\color{#0cbb34}{\text{Originally Posted by}}\) @Takikarin
oop sorry, so it would be the first one, and the second to last.
\(\color{#0cbb34}{\text{End of Quote}}\)
But why?

Answer 5

so, the two angles in a triangle will equal the outside angle in a problem such as this, and the opposite would be true. the outside angle minus an interior angle will equal the remaining angle.

Answer 6

like a first step hope you now that the sum of angle measure of a triangle equal 180 degrees
- and so you know that a line has angle measure of 180 degrees too

using these above wrote for this 3rd angle measure of triangle you can write is equal 180 - 129 = 51 degrees
and now you can write for angles measure of this triangle

51 +58 +x = 180 or

(180 -129) +58 +x = 180

x = 129 -58

@Laylalyssa