Classify Triangles Coordinate Plane

Classify the triangle with vertices at S(2,2) A(-4,-2) and C(6,-8)

• scalene

• equilateral

• isosceles

Classify the triangle with vertices at Q(-1,6) E(-4,2) and U(5,4)

• scalene

• equilateral

• isosceles

Classify the following triangle with coordinates, A(1,3) T(6,3) and R(2,1). Select all that apply

• Right

• isosceles

• scalene

• equilateral

Classify the following triangle with vertices at S(3,-1), I(7,3) and T(-1,7). Select all that apply

• scalene

• isosceles

• equilateral

• right

If a triangle with vertices of (-3,0), (0,3), (3,0), classify it by its sides.

• Isosceles

• Scalene

• Equilateral

• Obtuse

Points G, H, and I are plotted on the coordinate grid. What is the perimeter (in units) of the triangle that they form?

• 16.64

• 39.64

• 126

• 63

Given that P(-4, -2), Q(-2, 2) and R(5, 1) are vertices of a triangle, calculate the perimeter and classify the triangle.

• 21.1, Isosceles

• 21.1, Scalene

• 24.3, Scalene

• 24.3, Equilateral

Given the coordinates, classify ΔQRT by its sides

• Equilateral

• Isosceles

• Obtuse

• Scalene

Answer explanation

Remember to use the distance formula for the three sides of the triangle to determine the length.

Triangle ABC has vertices A(2, 5), B(5, 2), and C(2, -1). Classify triangle ABC.

• acute

• isosceles

• equilateral

• scalene

Determine the coordinates of Q.