Is DE DF ? Explain
D
58
161
A.
Yes; ZF = 61, so DE is congruent to DF by the Isosceles Triangle Theorem.
B.
Yes; mZF =61, so DE is congruent to DF by the Converse of the isosceles Triangle Theorem.
O
C. No; the measure of ZF is not given, so it is not known whether A DEF is isosceles or not. Thus no pair of sides in A DEF can be
proven congruent.
O D. No; although A DEF is isosceles, it is not known whether ZF is congruent to ZE or LD, so it is not known which pair of sides in
ADEF are congruent.

step-by-step explanation:

if you want to solve percent error follow these steps.

1. subtract the accepted value from the experimental value.

2. take the absolute value of step 1.

3. divide that answer by the accepted value.

4. multiply that answer by 100 and add the % symbol to express the answer as a percentage.

if you want to solve percent of change just do this.

1. work out the difference (increase) between the two numbers you are comparing.

2. divide the increase by the original number and multiply the answer by 100. if your answer is a negative number then this is a percentage decrease.

hope this : )

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step-by-step explanation:

*calories burned = (weight)(calorie factor)*

calories burned = 180 (0.65)

calories burned = 117

the calories he used up is 117, which is 65% of his weight.