¿Cuántos tipos de ángulos existen, cuantos tipos de triángulos existen y para que se utilizan en la vida real?

If the perimeter of the square equals the perimeter of the regular pentagon. each side of a pentagon is 16cm long. how long is each side of the square?

Griffin ordered a pair of sneakers online. he had a $22 credit that he applied toward the purchase, and then he used a credit card to pay for the rest of the cost. if the shoes cost $58, how much did griffin charge to his credit card when he bought the sneakers?

Ineed ! what is the connection between ratios, fractions, and percents? give an example with your answer.