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What is the ordinal number and word for 61?
61st or sixty-first.
Is there a method to find the 99th triangle number?
Oh, dude, finding the 99th triangle number is like, totally easy. You just use the formula n(n+1)/2, where n is the number of the triangle you want. So, for the 99th triangle number, you plug in 99 for n, do some quick math, and boom, you've got it!
How do you find the area of a triangle on a coordinate plane?
you count the number of boxes IN the shape.
How do you find an area for a triangle?
Lenght X Width, then you divide the number by 2.
How do you find the area and perimiter of a triangle?
To find the area of a triangle find the base and the height of the triangle. Then multiply the base by the height, then divide by 2. To find the perimiter of a triangle add together the outside edge of the triangle. To find the area of a triangle find the base and the height of the triangle. Then multiply the base by the height, then divide by 2. To find the perimiter of a triangle add together the outside edge of the triangle.
