Which triangle is conguent to ABC

Which recursive formula can be used to determine the total amount of money earned in any year based on the amount earned in the previous year? f(n+1)=f(n)+5

How do the definitions, properties, and postulates you've learned about line segments, parallel lines, and angles to define the shapes of polygons

Arectangle has a width of 5 cm and a length of 10 cm. if the width is increased by 3, how does the perimeter change?