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.

Since opening night, attendance at play a has increased steadily, while attendance at play b first rose and then fell. equations modeling the daily attendance y at each play are shown below, where x is the number of days since opening night. on what day(s) was the attendance the same at both plays? what was the attendance? play a: y = 8x + 191 play b: y = -x^2 + 26x + 126 a. the attendance was never the same at both plays. b. the attendance was the same on day 5. the attendance was 231 at both plays on that day. c. the attendance was the same on day 13. the attendance was 295 at both plays on that day. d. the attendance was the same on days 5 and 13. the attendance at both plays on those days was 231 and 295 respectively.

The measures of the legs of a right triangle are 15m and 20m . what is the length of the hypotenuse

Solve these problems: 1.what is the perimeter of an equilateral triangle with sides measuring 6cm? 2. a regular pentagon has sides measuring 3.2 cm. what is its perimeter? 3. a regular decagon has sides of 3.5mm . what is it’s perimeter? 4. a regular octagon has a perimeter of 64cm. what is the length of one of the sides? 5. a regular hexagon has a perimeter of 72mm . what is the length of one of the sides? 6. what is the perimeter of a rhombus with sides measuring 11m?