1. Angles of Triangles
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We know that ∠ABC ≅ ∠KHG.
86^(∘)
From the two figures, we see that ∠ABC ≅ ∠KHG. This means we can equate the expressions of these angles.
∠ABC ≅ ∠KHG: 6x^(∘)+2^(∘)=(5x^(∘)-27^(∘))+(3x^(∘)+1^(∘))
Remove parentheses
Simplify terms
LHS+26^(∘)=RHS+26^(∘)
LHS-6x^(∘)=RHS-6x^(∘)
.LHS /2.=.RHS /2.
Rearrange equation
When we know that x^(∘)= 14^(∘) we can substitute this into the expression for ∠ABC. ∠ABC: 6( 14^(∘))+2^(∘)=86^(∘)