Isosceles and Equilateral Triangles Angle 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,

• Obtuse, Scalene

Classify each triangle by its angles and sides.

• Acute, Isosceles

• Obtuse, Isosceles

• Right, Scalene

• Equiangular, Equilateral,

• Right, Isosceles

The measure of each angle of an equiangular triangle is 

• complementary

• supplementary

• 60°

• 45°

Solve for x

• 30°

• 40°

• 50°

• 60°

Which would be the best classification for the triangle shown?

• acute isosceles

• obtuse scalene

• obtuse isosceles

• acute scalene

Classify each triangle by its angles and sides.

• Acute, Isosceles

• Obtuse, Isosceles

• Right, Scalene

• Equiangular, Equilateral,

• Acute, Scalene

solve for x.

• 50

• 40

• 37

• 52

Find the measure of Angle A.

Solve for x.

• 6

• 8

• 15

• 13