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Daniel Math Academy · Grade 5 Math

Base Angles of Isosceles Triangles

Skill S.5 · Triangles · ★★☆ Medium · Quarter 4

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Ticks mark equal sides. The angles opposite equal sides are equal.

1. 1
   The triangle is isosceles. Find each base angle. 
2. 2
   The triangle is isosceles. Find each base angle. 
3. 3
   The triangle is isosceles. Find each base angle. 
4. 4
   The triangle is isosceles. Find each base angle. 
5. 5
   The triangle is isosceles. Find each base angle. 
6. 6
   The triangle is isosceles. Find each base angle. 

Daniel Math Academy · Grade 5 Math

Answer Key

S.5 Base Angles of Isosceles Triangles · ★★☆ Medium

1. 1$40^{\circ }$
2. 2$80^{\circ }$
3. 3$70^{\circ }$
4. 4$45^{\circ }$
5. 5$55^{\circ }$
6. 6$65^{\circ }$