Finding Missing Angles in Geometry

The video tutorial explains additive angles, where the goal is to find either the missing piece or the total angle. It provides examples of adding two angles to find the total, finding a missing angle using subtraction, and solving for a missing angle in a three-part angle. The tutorial emphasizes using addition and subtraction to solve for unknown angles, reinforcing the concept with practical examples.

What is the main concept of additive angles?

• Subtracting angles to find a missing part

• Adding angles to find a total angle

• Multiplying angles to find a total angle

• Dividing angles to find a missing part

If you have angles of 35 degrees and 90 degrees, what is the total angle?

• 145 degrees

• 135 degrees

• 125 degrees

• 115 degrees

In the example with angles of 22 degrees and 44 degrees, what is the total angle?

• 56 degrees

• 64 degrees

• 66 degrees

• 68 degrees

If the total angle is 150 degrees and one angle is 25 degrees, what is the missing angle?

• 125 degrees

• 135 degrees

• 145 degrees

• 115 degrees

How do you find a missing angle when given the total and one part?

• Add the known angle to the total

• Subtract the known angle from the total

• Multiply the known angle by the total

• Divide the total by the known angle

What is the missing angle if the total is 135 degrees and the known angles are 23 and 45 degrees?

• 67 degrees

• 57 degrees

• 87 degrees

• 77 degrees

What operation is used to solve for a missing angle in additive angles?

• Division

• Multiplication

• Subtraction

• Addition

If the total angle is 135 degrees, and two angles are 45 and 23 degrees, what is the missing angle?

• 77 degrees

• 87 degrees

• 57 degrees

• 67 degrees

What is the first step in solving for a missing angle when given the total and two parts?

• Add the two known angles

• Multiply the two known angles

• Subtract the two known angles

• Divide the total by the two known angles

In the context of additive angles, what does the term 'fact families' refer to?

• A group of related geometric shapes

• A group of related angles

• A group of related multiplication and division facts

• A group of related addition and subtraction facts