Finding Missing Values in Angles

The video tutorial covers the identification and solving of equations involving vertical, complementary, and supplementary angles. It begins with an explanation of vertical angles, demonstrating how to solve for x in a two-step equation. The tutorial then moves on to complementary angles, showing how two angles add up to 90 degrees and solving for x. Finally, it explains supplementary angles, where two angles add up to 180 degrees, and solves for x using a similar method.

What property do vertical angles have?

• They are always adjacent.

• They sum up to 180 degrees.

• They sum up to 90 degrees.

• They are always congruent.

Tags

CCSS.7.G.B.5

How do you find the value of x in the equation 2x + 10 = 110?

• Add 10 to both sides

• Divide both sides by 2

• Multiply both sides by 2

• Subtract 10 from 110

Tags

CCSS.7.EE.B.4A

What is the value of x when 2x + 10 = 110?

• 50

• 80

• 60

• 70

Which of the following is true about vertical angles?

• They are adjacent.

• They sum up to 180 degrees.

• They are congruent.

• They sum up to 90 degrees.

Tags

CCSS.7.G.B.5

What defines complementary angles?

• Angles that sum up to 90 degrees

• Angles that are congruent

• Angles that are opposite to each other

• Angles that sum up to 180 degrees

Tags

CCSS.7.G.B.5

How do you solve the equation 3x + 45 = 90 for x?

• Divide 90 by 45 and subtract 3

• Add 45 to 90 and divide by 3

• Multiply 90 by 3 and subtract 45

• Subtract 45 from 90 and divide by 3

Tags

CCSS.7.EE.B.4A

What is the value of x when 3x + 45 = 90?

• 10

• 15

• 25

• 20

Tags

CCSS.8.G.A.5

What are supplementary angles?

• Angles that are congruent

• Angles that sum up to 90 degrees

• Angles that sum up to 180 degrees

• Angles that are adjacent to each other

Tags

CCSS.7.G.B.5

How do you find the value of x in the equation 5x + 80 = 180?

• Multiply 180 by 5 and subtract 80

• Add 80 to 180 and divide by 5

• Subtract 80 from 180 and divide by 5

• Subtract 80 from 180 and multiply by 5

Tags

CCSS.8.G.A.5

What is the value of x when 5x + 80 = 180?

• 25

• 15

• 20

• 10

Tags

CCSS.7.G.B.5