Classify Triangles, Sides of Triangles, Triangle Sum, Exterior Angles

Which two angles are the remote interior angles to Angle W?

• Angle X and Angle Y

• Angle X and Angle Z

• Angle Y and Angle Z

• Angle Z and Angle W

Solve for x.

• 1

• 2

• 3

• 4

Classify the triangle by its sides.

• Equilateral

• Isosceles

• Scalene

Classify the triangle by its sides.

• Equilateral

• Isosceles

• Scalene

Classify the triangle by its angles.

• Acute

• Equiangular

• Obtuse

• Right

Classify the triangle by its angles.

• Acute

• Equiangular

• Obtuse

• Right

The sum of the measures of the interior angles of a triangle is 180 degrees.

• Exterior Angle Theorem

• Corollary to the Triangle Sum Theorem

• Triangle Sum Theorem

• Third Angles Theorem

Classify the triangle by its angles.

• Acute

• Equiangular

• Obtuse

• Right

Set up an equation to solve for x.

• 2x + 5 + 35 = x - 10

• 2x + 5 + 35 = x - 10

• x - 10 + 2x + 5 + 35 = 180

• x - 10 + 2x + 5 = 35

Set up an equation to solve for x.

• 7x + 5 + 60 + 20x = 180

• 7x + 5 + 60 + 20x = 90

• 60 + 20x = 7x + 5

• 7x + 5 + 60 = 20x