Triangle Angle Relationships

The video tutorial explains that the sum of interior angles in any triangle is 180 degrees. It demonstrates how to calculate the missing angle when two angles are known, using examples of both a regular triangle and a right triangle. The tutorial concludes with a summary of the rules for calculating interior angles.

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

• 360 degrees

• 270 degrees

• 180 degrees

• 90 degrees

Tags

CCSS.8.G.A.5

If a triangle has angles measuring 70 degrees and 32 degrees, what is the measure of the third angle?

• 78 degrees

• 68 degrees

• 82 degrees

• 88 degrees

Tags

CCSS.7.G.B.5

In a right triangle, if one angle is 42 degrees, what is the measure of the other non-right angle?

• 68 degrees

• 58 degrees

• 48 degrees

• 38 degrees

Tags

CCSS.4.G.A.2

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

• Right triangle

• Equilateral triangle

• Acute triangle

• Obtuse triangle

Tags

CCSS.8.G.A.5

What is the measure of the missing angle in a triangle with angles of 65 degrees and 95 degrees?

• 25 degrees

• 20 degrees

• 15 degrees

• 30 degrees

Tags

CCSS.8.G.A.5

Which of the following is true for the sum of angles in a triangle?

• It is always 180 degrees

• It is always 90 degrees

• It is always 360 degrees

• It can vary depending on the type of triangle

Tags

CCSS.8.G.A.5