find out the measure of each angle shown without using a protractor
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hlo mate
- a vertical line connecting the 2 rays of the angle. To determine the number of degrees in an acute angle, connect the 2 rays to form a triangle. Line up the short end of your ruler with the bottom ray, then draw a vertical line intersecting the other ray using the long side of your ruler.
- Place the end of your ruler at the vertex of the angle. Measure the length of the adjacent side from the vertex to the point where it intersects with the opposite side.
- Set the short end of your ruler flush against the adjacent side of the triangle. Measure the length of the vertical line from the point where it meets the adjacent side to the point where it meets the upper ray of the angle (the hypotenuse of your triangle).
- The slope is the steepness of the diagonal line, or hypotenuse, of your triangle. Once you know this number, you can calculate the degrees of your acute angle.
- Type the value for slope into your scientific calculator, then press the inverse tan button (tan-1). This will give you the degrees of the angle.
hope it helps you
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