From author talks and exhibitions to festivals, lectures, and offbeat events, here’s your guide to the DMV’s most eclectic spring offerings.

To calculate the area of a rectangle you multiply the length by the width. A right-angled triangle is like half a rectangle. So to calculate the area of a triangle, you can work out the area of the ...

// 2. Taking input from a user by asking the user for the triangle's height System.out.print("Enter a positive integer for the triangle's height: "); ...

System.out.println("A Square is a shape with 4 equal sides and 4 right angles."); System.out.println("Area formula: A = side^2"); System.out.println("Perimeter formula: P = 4 * side"); ...