Angles of Circles, Triangles, Quadrilaterals

In a triangle, how many total degrees are there?

• 100%

• 180 degrees

• it varies

• 360 degrees

Which type of triangle is pictured?

• Equilateral Triangle

• Right Isosceles Triangle

• Obtuse Scalene Triangle

• Obtuse Equilateral Triangle

Find the measure of each angle indicated. 

• 139°

• 66°

• 138°

• 116°

If two of the angles of a triangle are 30 and 70 degrees, the third angle measures...

• 80

• 100

• 60

• 90

Mathematical Equivalence

ON

Find the value of x.

Mathematical Equivalence

ON

Think about if the angles are equal or if they add up to 180. Solve for x. Plug it in.

Mathematical Equivalence

ON

What is the third angle of a triangle whose 1st angle is 34 and 2nd angle is 101?

• 32

• 39

• 45

• 54

What do the angles in an equilateral triangle measure?

• 30, 60, 90

• 45, 45, 90

• 60, 60, 60

• 35, 55, 90

Which is true of a minor arc?

• It forms half a circle.

• It forms a whole circle.

• It measures greater than 180 degrees. 

• It measures less than 180 degrees.