Triangles Practice Test

The sum of the sides of a triangle is 180 degrees?

• True

• False

Classify the triangle by its angles and sides.

• Right

• Acute

• Scalene

• Isosceles

• Equilateral

Classify the triangle by its angles and sides.

• scalene

• obtuse

• acute

• right

Classify the triangle by its angles and sides.

• Right

• Obtuse

• scalene

• Equiangular

Classify the triangle by its angles and sides.

• equilateral

• scalene

• obtuse

• equiangular

• acute

Classify the triangle by its angles and sides.

• scalene

• isosceles

• acute

• right

• equilateral

Find the measures of the sides of ∆JKL, then classify it by its sides. J(-7, -7), K(-9, 1), L(-1, -1)

• Isosceles

• Equiangular

• Equilateral

• Obtuse

• Scalene

If ∆PQR is an equilateral triangle, PQ = x+14, QR = 4x-25, and PR = 6x-51, find x and the measure of each side.

• x=10, all sides= 21

• x=13, all sides =27

• x=4, all sides=24

∆ABC is an isosceles triangle with AB ≅ BC. If AB = 3x + 41, BC = 8x – 54, and AC = 12x – 103, find x.

• x=19

• x=98

• x=12

• x=125

Find the value of the missing angle

• 58

• 122

• 180

• 57