Understanding Triangle Angles

The video tutorial explains how to find the measure of a missing angle in a triangle. It begins by stating the sum of interior angles in a triangle is 180°. The tutorial demonstrates using an exterior angle to find an interior angle, highlighting the concept of supplementary angles. It then sets up an equation to solve for the missing angle, resulting in a measure of 22°. The explanation is clear and step-by-step, ensuring understanding of the geometric principles involved.

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

• 270 degrees

• 360 degrees

• 180 degrees

• 90 degrees

Tags

CCSS.8.G.A.5

How can the exterior angle be used in finding a missing interior angle?

• By adding it to the interior angle

• By subtracting it from 180 degrees

• By multiplying it by 2

• By dividing it by 2

Tags

CCSS.8.G.A.5

What is the relationship between an exterior angle and the adjacent interior angle?

• They are equal

• They are complementary

• They are supplementary

• They are unrelated

Tags

CCSS.8.G.A.5

If an exterior angle measures 64 degrees, what is the measure of the adjacent interior angle?

• 64 degrees

• 116 degrees

• 180 degrees

• 120 degrees

Tags

CCSS.8.G.A.5

What equation can be set up to find the missing angle X in the triangle?

• X + 116 + 42 = 180

• X + 64 + 42 = 180

• X + 42 + 64 = 180

• X + 116 + 64 = 180

Tags

CCSS.7.G.B.5

What is the value of X if the equation is X + 116 + 42 = 180?

• 22 degrees

• 42 degrees

• 116 degrees

• 64 degrees

Tags

CCSS.7.G.B.5

What is the sum of the angles 116 and 42?

• 100 degrees

• 200 degrees

• 180 degrees

• 158 degrees

Tags

CCSS.4.MD.C.7

What operation is performed to solve for X in the equation X + 116 + 42 = 180?

• Addition

• Subtraction

• Division

• Multiplication

Tags

CCSS.7.G.B.5

What is the final measure of the missing angle X?

• 116 degrees

• 64 degrees

• 42 degrees

• 22 degrees

Tags

CCSS.7.G.B.5