Page 74 - Math Course 3 (Book 2)
P. 74
Identifying Triangles: Angles and Sides
Your Turn!
Find Missing Values
ALGEBRA
Find x and the measure of each side of equilateral triangle ABC if AB = 6x – 8, BC = 7 + x, and AC = 13 – x.
A. x = 10 and all sides are 3.
B. x = 6 and all sides are 13.
C. x = 3 and all sides are 10.
D. x = 3 and all sides are 16.
Answer
Use the Distance Formula
Find the measures of the sides of ΔABC. Classify the triangle by sides.
A. scalene
B. isosceles
C. equilateral
D. cannot be determined
Answer
Skill Practice!
Use a protractor to classify each triangle as acute, equiangular, obtuse, or right.
1. 2. 3.
4. 5. 6.
66
