Triangles and Quadrilaterals Angle Sum

What is the sum of the interior angles of a triangle?

• 90 degrees

• 180 degrees

• 270 degrees

• 360 degrees

If one angle of a triangle is 90 degrees, what type of triangle is it?

• Acute triangle

• Right triangle

• Obtuse triangle

• Equilateral triangle

What is the sum of the interior angles of a quadrilateral?

• 180 degrees

• 270 degrees

• 360 degrees

• 450 degrees

A triangle has angles measuring 50 degrees and 60 degrees. What is the measure of the third angle?

• 70 degrees

• 80 degrees

• 90 degrees

• 100 degrees

A quadrilateral has three angles measuring 90 degrees, 85 degrees, and 95 degrees. What is the measure of the fourth angle?

• 80 degrees

• 85 degrees

• 90 degrees

• 95 degrees

Which of the following is true for all triangles?

• They have at least one right angle.

• The sum of their interior angles is 360 degrees.

• They have three sides and three angles.

• They are always equilateral.

If a quadrilateral is a rectangle, what can be said about its angles?

• All angles are 90 degrees.

• Two angles are 90 degrees, and two are 45 degrees.

• All angles are 60 degrees.

• Two angles are 120 degrees, and two are 60 degrees.

In a triangle, if two angles are equal, what type of triangle is it?

• Scalene triangle

• Isosceles triangle

• Equilateral triangle

• Right triangle

A quadrilateral has angles measuring 110 degrees, 95 degrees, and 85 degrees. What is the measure of the fourth angle?

• 60 degrees

• 70 degrees

• 80 degrees

• 90 degrees

Which of the following is true for all quadrilaterals?

• They have four sides and four angles.

• The sum of their interior angles is 180 degrees.

• They are always rectangles.

• They have at least one right angle.