Exploring the Angle Addition Postulate with Algebra

The video tutorial covers exercises on using the angle addition postulate to find unknown angles. In Exercise 24, the focus is on finding the measure of angle NPM using adjacent angles and the concept of a straight angle. Exercise 25 introduces algebraic expressions to solve for angle WXZ, emphasizing substitution and simplification. The final exercise involves substituting values to determine angle FJG, reinforcing the use of algebra in geometry.

What postulate is used in Exercise 24 to find the measure of an angle?

• Angle Multiplication Postulate

• Angle Division Postulate

• Angle Addition Postulate

• Angle Subtraction Postulate

Tags

CCSS.8.G.A.5

What do adjacent angles share?

• A common point

• A common side

• A common ray

• A common vertex

Tags

CCSS.7.G.B.5

What can we assume about points LP and M from the diagram?

• They form a right angle

• They are collinear

• They are parallel

• They are perpendicular

Tags

CCSS.4.G.A.1

What is the measure of a straight angle?

• 360 degrees

• 270 degrees

• 180 degrees

• 90 degrees

Tags

CCSS.4.MD.C.5B

CCSS.HSG.CO.A.1

If the green angle is 79 degrees and the overall angle is 180 degrees, what is the measure of the red angle?

• 101 degrees

• 79 degrees

• 180 degrees

• 99 degrees

Tags

CCSS.7.G.B.5

In Exercise 25, what is the overall angle WXZ given as?

• 70 degrees

• 80 degrees

• 100 degrees

• 90 degrees

Tags

CCSS.4.MD.C.7

What is the next step after combining the expressions in Exercise 25?

• Subtract the expressions

• Add the expressions

• Multiply the expressions

• Divide the expressions

What is the measure of the red angle after substitution in Exercise 25?

• 55 degrees

• 25 degrees

• 255 degrees

• 80 degrees

Tags

CCSS.4.MD.C.7

What is the measure of the green angle FJG after substitution?

• 135 degrees

• 125 degrees

• 145 degrees

• 115 degrees

Tags

CCSS.7.G.B.5

What is the final step after solving for the variable in the final exercise?

• Verify the diagram

• Check the overall angle

• Substitute back into the expressions

• Recalculate the variable

Tags

CCSS.HSG.SRT.C.8