Answer:
right triangle
Step-by-step explanation:
I find it convenient to answer questions like this by computing a "form factor" that subtracts the square of the long side from the sum of the squares of the shorter sides. The sign of this value is the sign of the cosine of the largest angle in the triangle.
f = a² +b² -c²
f = 11.2² +21² -23.8²
f = 125.44 +441 -566.44 = 0
The cosine of the largest angle is 0, so that angle is 90° and the triangle is a right triangle.
Answer:
Step-by-step explanation:
If the diagonals of the rectangle are congruent,
AC = BD
By using formula to calculate the distance between two points,
Distance between two points =
Distance between A(0, -3) and C(2, 8),
AC =
=
=
Similarly, distance between two points B(-4, 0) and D(6, 5),
BD =
=
=
Therefore, both the diagonals are congruent.
Hence, given quadrilateral ABCD is a rectangle.
Its <span>0.444444444. hope this helps you</span>
Answer:
6 triangles, There a right triangle, a scalene triangle. Isosceles triangle, Acute triangle, obtuse triangle
I tried my bad if any are wrong :(
Using the coordinates (-2, 0) and (0, -2) in the form y1 - y2/x1 - x2 we get:
0 - -2/-2 - 0, which simplifies to 2/-2. The slope is -1.
Hope this helps.