3 years ago

Given Triangle DEF is isosceles and angle D is the vertex angle, Find x, DE, DF, EF

Mathematics

1 answer:

ch4aika [34]3 years ago

4 0

Answer:

x=2;DE,EF=9,DF=5

Step-by-step explanation:

Since DEF is isoceles, you can set the equations

x+7 and 2x+5 equal to each other

x+7=2x+5, now solve for x

-x=-2,

x=2, now plug in for each side

DE,EF=9

DF=3(2)-1=5

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