A cycle in the graph below is HDGH.
A cycle is where a vertices, or corner, can be traced back to itself. HDGH starts with H and traces back to H on the same line.
2 116.666/275
hope it helps!
In an isosceles triangle, the base angles are congruent. The third angle is called the vertex angle.
Here, the vertex angle is <A.
Therefore, m<C = m<B.
m<A = 3m<B + 20
m<A + m<B + m<C = 180
3m<B + 20 + m<B + m<B = 180
5m<B + 20 = 180
5m<B = 160
m<B = 32
m<C = m<B = 32
Answer: m<C = 32 deg
-2 -10 -3
-7 0 -8
-6 -5 -4
That's the square, it was a fun puzzle :)