Angles in Triangles

What is the sum of all angles in a triangle?

• 270 degrees

• 180 degrees

• 90 degrees

• 360 degrees

If one angle in a triangle measures 45 degrees, and another angle measures 65 degrees, what is the measure of the third angle?

• 80 degrees

• 70 degrees

• 60 degrees

• 90 degrees

What type of triangle has all angles measuring less than 90 degrees?

• Right triangle

• Acute triangle

• Equilateral triangle

• Obtuse triangle

In a right-angled triangle, what is the measure of the right angle?

• 90 degrees

• 60 degrees

• 45 degrees

• 180 degrees

If one angle in a triangle measures 60 degrees, and another angle measures 70 degrees, what is the measure of the third angle?

• 50 degrees

• 100 degrees

• 90 degrees

• 80 degrees

What type of triangle has one angle measuring more than 90 degrees?

• Equilateral triangle

• Right triangle

• Acute triangle

• Obtuse triangle

If one angle in a triangle measures 80 degrees, and another angle measures 45 degrees, what is the measure of the third angle?

• The measure of the third angle is 55 degrees.

• The measure of the third angle is 35 degrees.

• The measure of the third angle is 90 degrees.

• The measure of the third angle is 125 degrees.

What is the name of a triangle with all angles measuring 60 degrees?

• equilateral triangle

• isosceles triangle

• right triangle

• obtuse triangle

If one angle in a triangle measures 75 degrees, and another angle measures 45 degrees, what is the measure of the third angle?

• 120 degrees

• 30 degrees

• 90 degrees

• 60 degrees

What type of triangle has one right angle?

• right-angled triangle

• obtuse-angled triangle

• acute-angled triangle

• equilateral triangle