Intro to Triangles Homework

Classifying Triangles
Name________________________
Date ______________ Period ____
Match each triangle with its description.
1. Side lengths: 2cm, 3cm, 4cm
A. Acute
2. Side lengths: 3 cm, 2cm, 3cm
B. Equilateral
3. Side lengths: 4cm, 4cm, 4cm
C. Scalene
4. Angle measures: 50 ̊, 60 ̊, 70 ̊
D. Obtuse
5. Angle measures: 30 ̊, 60 ̊, 90 ̊
E. Isosceles
6. Angle measures: 20 ̊, 145 ̊, 15 ̊
F. Right
Classify each triangle by its angles and by its sides.
For Exercises 14 -­‐ 23, find the angle measures. Use the diagram of the
protractor below. ∠ JVK and ∠ KVL are called adjacent angles because
they have a common vertex and a common side. 14. m ∠ JVK 15. m ∠ JVL 16. m ∠ JVM 17. m ∠ KVL 18. m ∠ KVM 19. m ∠ LVM 20. the complement of ∠ JVK 21. the supplement of ∠ JVK 22. the complement of ∠ MVL 23. the supplement of ∠ JVL