You take the base (bottom) and times it by the height (usually at the side) BUT THEN you take your answer for that and cut it in half. [(bh/2 or bxh%2)I tried to make the percent sign look like a division sign.] *note i know this because i am a 7th grade student with a A in math, thank you very much :) I'm very reliable ;)
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How do you find the apex of a triangle?
You find the orthocenter by constructing the altitudes from the vertices in a triangle. If the triangle is obtuse, the orthocenter will fall outside the triangle. If the triangle is acute, the orthocenter will fall on the inside of the triangle. If the triangle is a right triangle, the orthocenter will lie on a vertix.
There is no such thing as a 3D triangle.
Yes, they do.
The perimeter of a triangle is the distance around it. Add the lengths of the three sides to find the perimeter.