Classifying Triangles / Triangle Sum Theorem

The Triangle Sum Theorem states that the sum of all angles in a triangle is ______. 

• 45°

• 90°

• 180°

• 360°

Classify each triangle by its angles and sides.

• Acute, Isosceles

• Obtuse, Isosceles

• Right, Scalene

• Equiangular, Equilateral,

• Acute, Scalene

Classify each triangle by its angles and sides.

• Acute, Isosceles

• Obtuse, Isosceles

• Right, Scalene

• Equiangular, Equilateral,

• Acute, Scalene

Classify each triangle by its angles and sides.

• Acute, Isosceles

• Obtuse, Isosceles

• Right, Scalene

• Equiangular, Equilateral,

• Acute, Scalene

Solve for x.

• 16

• 11

• 50

• 6

Find the measure of the angle indicated. 

• 139°

• 66°

• 138°

• 116°

Find the value of x

• 1

• 15

• 11

• 3

solve for x.

• 50

• 40

• 37

• 52

Find the measure of the missing angle.

• 90^o

• 10⁰

• 130^o

• 50^o

Solve for x.

• 6

• -10

• 7

• -9