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Daniel Math Academy · Grade 8 Math

Triangle Angles with Ratios & Equations

Skill J.2 · Triangle & polygon angles · ★★☆ Medium

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Answer each question.

1. 1
   A triangle's angles measure $x^{\circ }$, $(3x+20{)}^{\circ }$, and $(3x+13{)}^{\circ }$. Find $x$.
2. 2
   A triangle's angles measure $x^{\circ }$, $(x+20{)}^{\circ }$, and $(3x+20{)}^{\circ }$. Find $x$.
3. 3
   A triangle's angles measure $(4x+31{)}^{\circ }$, $x^{\circ }$, and $(4x+5{)}^{\circ }$. Find $x$.
4. 4
   A triangle's angles measure $(2x+30{)}^{\circ }$, $x^{\circ }$, and $(4x+45{)}^{\circ }$. Find $x$.

Daniel Math Academy · Grade 8 Math

Answer Key

J.2 Triangle Angles with Ratios & Equations · ★★☆ Medium

1. 1$x=21$
2. 2$x=28$
3. 3$x=16$
4. 4$x=15$