Lines AC and BD intersect at E. A figure. What is the measure of angle BEC?
1 answer:
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RO divides the rectangle into two congruent right triangles.
The area of the one triangle is equal half area of the rectangle.
Calculate the area of rectangle:
The area of right triangle:
Use the Pythagorean theorem to calculate the length of RO:
The formula of an area of this right triangle is:
Therefore we have the equation:
Area of a triangle is equal to 1/2 b(h) so since you already have the height and base, all you need to do is input it back into the equation:
(10)(13)
Multiply 10 & 13 to equal
(130)
Then take half of 130 to get
A = 65
Multiply 10 & 13 to equal
Then take half of 130 to get
A = 65