Page 103 - Math Course 3 (Book 2)
P. 103
Coordinate Proofs
Classify Triangles
FLAGS
Write a coordinate proof to prove this flag is shaped like an isosceles triangle. The altitude is 16 inches and
the base is 10 inches.
B
What is the ordered pair for Point C?
A. (10, 10)
B. (10, 5)
C. (16, 10) A
D. (16, 5)
Answer
Next, determine the lengths of CA and CB. What are the lengths
of both of these?
A. 21
B. 16
C. 281
D. 10
Answer
Skill Practice!
Position and label each triangle on the coordinate plane.
1. right △FGH with legs a units 2. isosceles △KLP with base 3. isosceles △AND with base
and b units KP 6b units long AD 5a long
95
