In order for a \( 25 \) -gon to be regular, which of the following statements must be true?  The interior angles are congruent to their exterior angles. All the diagonals are congruent. Opposite pairs of sides are parallel. All interior angles and all sides are congruent. 

Dalle diagonali all'altezza Un rombo ha le diagonali che misurano 24 cm e 7 cm e il lato di \( 12,5 \mathrm{~cm} \). Calcola l'altezza del rombo.

296. Il lato, l'altezza e una diagonale di un rombo misurano, rispettivamente, \( 35 \mathrm{~cm}, 33,6 \mathrm{~cm} \) e 56 cm . Calcola la misura dell'altra diagonale.

AFerris wheel has a radius r of 24.5 feet. The height of the tower \( t \) is 30.8 feet. The horizontal distance d from the origin to the base of the tower which lies to the right of the origin is 43.7 feet. Find the standard form of the equation of the circle represented by the Ferris wheel. The standard form of the equation of the circle represented by the Ferris wheel is (Do not type units. Type any numbers as decimals. Use the variables \( x \) and \( y \).

Stabilisci se le seguenti quaterne di numeri rappresentano le misure in centimetri delle lunghezze dei lati di un quadrilatero. Se si, calcola it perimetro del quadrilatero. a \( 13,24,7,41 \) b \( 3,10,8,22 \) e \( 11,9,9,15 \)

A sector has radius 4 and central angle \( 184^{\circ} \). Find the area of the sector. Give your answer in terms of \( \pi \) or as a decimal rounded to two decimal places.