Posted by **Sam** on Wednesday, August 8, 2007 at 5:36pm.

How can I construct a triangle ABC with vertices A(-4,2), B(4,3), C(1,-3). what are the angles in order from least measure to greatest measure

Since you will have to use trigonometry to find the angles, surely you must know how to plot points.

take the slope of each of the lines,

e.g. slope BC =(3-(-3))/(4-1) = 2

If ß is the angle BC makes with the x-axis, then tan ß = 2 and

ß=63.43º

In the same way you can find the angles that the other sides make with the x-axis, and from there you will be able to find the angles of the triangle.

## Answer this Question

## Related Questions

- math - construct an equilateral triangle ABC in which altitude drawn from ...
- maths-constructions - Construct a rhombus ABCD in which AB= 6 cm and angle ABC= ...
- Algebra 2 review - In triangle ABC, the ratio of the measure of angle A to the ...
- math - construct a triangle ABC such that AB =BC=4.7 cm and <B=75 DEGREE ....
- math - in a triangle, the measure of the first angle is twice the measure of the...
- math - The sum of the measures of the angles of any triangle is 180 degrees. In...
- Math(geometry) - I need to know how to find the meausure of a triangle using ...
- Maths - construct an equilateral triangle of perimeter is 19.5cm. Measure and ...
- Geometry - I need to bisect two angles of a triangle, measure the triangle I ...
- math - Two angles of a triangle have the same measure and the third one is 15 ...

More Related Questions