πagarwalmath · 5th grade · Florida B.E.S.T. MA.5.GR.1.1
🔺 Kinds of triangles
Name triangles by their sides and angles
Name: ______________________Date: ____________
1Two angles of a triangle are 45° and 20°. What is the third angle?
Answer: ______________ °
2Two angles of a triangle are 90° and 60°. What is the third angle?
Answer: ______________ °
3Two angles of a triangle are 50° and 60°. What is the third angle?
Answer: ______________ °
4Two angles of a triangle are 80° and 30°. What is the third angle?
Answer: ______________ °
5Two angles of a triangle are 80° and 60°. What is the third angle?
Answer: ______________ °
6Two angles of a triangle are 75° and 30°. What is the third angle?
Answer: ______________ °
7Two angles of a triangle are 90° and 40°. What is the third angle?
Answer: ______________ °
8Two angles of a triangle are 70° and 20°. What is the third angle?
Answer: ______________ °
9Two angles of a triangle are 70° and 70°. What is the third angle?
Answer: ______________ °
10Two angles of a triangle are 80° and 80°. What is the third angle?
Answer: ______________ °
11Two angles of a triangle are 75° and 20°. What is the third angle?
Answer: ______________ °
12Two angles of a triangle are 60° and 60°. What is the third angle?
Answer: ______________ °
Answer key: Kinds of triangles
- 1. 115 °
- 2. 30 °
- 3. 70 °
- 4. 70 °
- 5. 40 °
- 6. 75 °
- 7. 50 °
- 8. 90 °
- 9. 40 °
- 10. 20 °
- 11. 85 °
- 12. 60 °
Practice this lesson online with games that adjust to your child: agarwalmath.com/math/5th-grade/shape-triangles