1. Agenda: 4.1 Notes Exit Slip Work on Supplement
Chapter 4 Section 1
Agenda:
4.1 Notes
Exit Slip
Work on Supplement

2. Classifications of Triangles BY ANGLES
Acute Triangle
Equiangular Triangle
Obtuse Triangle
Right Triangle

3. Classifications of Triangles BY ANGLES
The sides of ∆ABC are
The vertices are points
The angles are

4. Example 1:
a. Classify the triangle as acute, equiangular, obtuse, or right.

5. Example 1:
b. Classify the triangle as acute, equiangular, obtuse, or right.

6. Example 2:
Classify ∆XYZ as acute, equiangular, obtuse, or right. Explain your reasoning.

7. Classifications of Triangles BY SIDES
Equilateral Triangle
Isosceles Triangle
Scalene Triangle

8. Example 3:
If point Y is the midpoint of VX and WY = 3.0 units, classify ∆VWY as equilateral, isosceles, or scalene. Explain your reasoning.

9. Example 4:
a) Find the measures of the sides of isosceles triangle KLM with base KL

10. Example 4:
b) Find the value of x and the measures of each side of an equilateral triangle ABC if
AB = 6y – 2, BC = 7 + x, and AC = 13 – x.

11. Example 5:
The perimeter of ∆BAG is 44. AG = 𝑥 , AB = 30 – 14𝑥, BG = 4𝑥 + 5
By solving for x, determine whether ∆BAG is scalene, isosceles, or equilateral.

12. Example 6:
Two sides of an isosceles triangle with perimeter 115 are in the ratio of 2:3. Find all possible lengths for the base.