help

[crude yarrow]

Can someone help

[stone parcel]

let's look at the little triangle below. because it has 3 equal angles, we can confirm that it's an equilateral triangle

every equilateral triangle has three 60º angles

so we already know that the green angle is 60º

we can also say that the angle above the equilateral triangle is 60º, as opposite angles always have the same measurement

now, we already have two angles of the big triangle. we can figure out the third one by calculating 180-90-60

summing the result with 101 and subtracting the sum out of 180, we get the needed angle

i hope that helps

[crude yarrow]

Ohh I got it

Wait so we just 180-90-60 = 30 and that’s the answer?

[sick swan]

no

you need to find the angle subtended by the right triangle at the upper line with 101 degrees

and as we know that angle on a straight line is 180