+0

Need help figuring this out

0
363
2
+99

What is the measure of  DF?

CrazyDaizy  Jun 2, 2017

#2
+7339
+4

I think you want the measure of the arc DF

$$\angle{DEF}=\frac12\,\cdot\,\overset{ \frown}{DF} \\~\\ 72^{\circ}=\frac12\,\cdot\,\overset{\frown}{DF} \qquad \text{ Multiply both sides of the equation by 2.} \\~\\ 144^{\circ}=\overset{\frown}{DF}$$

hectictar  Jun 2, 2017
#1
+458
+1

I'll think and then edit this.

ZZZZZZ  Jun 2, 2017
edited by ZZZZZZ  Jun 2, 2017
#2
+7339
+4

I think you want the measure of the arc DF

$$\angle{DEF}=\frac12\,\cdot\,\overset{ \frown}{DF} \\~\\ 72^{\circ}=\frac12\,\cdot\,\overset{\frown}{DF} \qquad \text{ Multiply both sides of the equation by 2.} \\~\\ 144^{\circ}=\overset{\frown}{DF}$$

hectictar  Jun 2, 2017