Register
D(5, 7), E(4, 3), and F(8, 2) form the vertices of a triangle. What is mZDEF?
463,669 views
1 vote
1 vote
D(5, 7), E(4, 3), and F(8, 2) form the vertices of a triangle. What is mZDEF?

User Unpollo
by
3.3k points

1 Answer

16 votes
16 votes

Answer:
m\angle DE F=90^(\circ)

Explanation:

The slope of
DE is
(7-3)/(5-4)=4.

The slope of
EF is
(3-2)/(4-8)=-(1)/(4).

Thus,
DE \perp EF, meaning
m\angle DE F=90^(\circ).

User Metadings
by
3.3k points
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

1.6m questions

2.0m answers

Other Questions

Can anybody tell me what’s going on here?
Granola costs $1.76 per pound. Write and solve an equation to determine the number of pounds p of granola that can be purchased with $7.04. The equation is: The value of x is
Evalute 8a -1+0.5b when a =1/4 and b= 10 how dose this work i need help..
PLZ needed now plz URGENT!
HELP PLEASE, I NEED THE ANSWER QUICKLY
Link Copied!