Writing and Solving Linear Equations in 8th Grade Math

What does the term 'congruent' mean in geometry?

• Two angles that add up to 180 degrees

• Different shapes but same size

• Two angles that add up to 90 degrees

• Same shape and same size

How can you remember that complementary angles add up to 90 degrees?

• Complementary angles are always obtuse

• Complementary has one 'p', which looks like a backward 9

• Complementary has two 'p's, which look like two backward 9s

• Complementary angles are always acute

What is the first step in solving a problem involving writing and solving linear equations about angles?

• Translate the English description into a math sentence

• Check the solution

• Solve the equation

• Combine like terms

In the example where one angle is five degrees less than three times another angle, what is the measure of the first angle if their sum is 143 degrees?

• 180 degrees

• 106 degrees

• 37 degrees

• 143 degrees

Given a right triangle with one angle being 10 degrees more than four times another angle, and the third angle being 90 degrees, what is the measure of the smallest angle?

• 16 degrees

• 74 degrees

• 90 degrees

• 106 degrees

What is the expression for angle C if angle A is 7x + 4?

• 2x + 8

• 14x + 8

• 7x - 4

• 14x - 8

Which property is used to combine like terms in the equation 7x + 7x + 14x + 4 + 8 = 180?

• Identity Property

• Commutative Property

• Associative Property

• Distributive Property

What is the value of x when solving the equation 28x + 12 = 180?

• 6

• 8

• 5

• 7

If angle A is 6x + 9 and angle B is 9x - 30, what is the measure of angle A when x = 13?

• 84 degrees

• 91 degrees

• 78 degrees

• 87 degrees

What is the measure of angle B in a right triangle if angle A is 82 degrees?

• 8 degrees

• 90 degrees

• 82 degrees

• 44 degrees