Geometry with Algebra

If the measure of angle 5 is five times the measure of angle 6, what is the measure of angle 5?

Which of the following is NOT true if angle 3 is a right angle? (You may choose multiple answers)

• Angles 1 and 2 are complementary

• Angles 3 and 6 are complementary

• Angles 5 and 7 are adjacent

• Angles 5 and 7 are congruent

• Angles 4 and 8 are supplementary and congruent

Create an equation: "the height is double the base"

• h = b - 2

• h = b + 2

• h = b/2

• h = 2b

Create an equation: the base is three less than the height

• b = 3 - h

• b = 3/h

• b = h - 3

• b = h/3

If this is a right triangle, find the measure of x to the nearest hundredth.

• 42°

• 41.98°

• 41.99°

• 45°

Create an equation: "half the height is two more than three times the base"

• h/2 = 3b + 2

• h = 3b + 2

• h/2 = b + 2

• h = (3b + 2)/2

Create an equation: "the area of circle A is one less than twice the area of circle B"

• A = 1 - 2B

• A = 2B - 1

• A/2 = B - 1

• A = 2B + 1

Create an equation: "the circumference of a circle is one-tenth of its area"

• C = 10A

• C = 10Aπ

• C = Aπ/10

• C = A/10

Solve for x.

The length of a rectangle is five times its width. If the area is 405 cm², what is its perimeter?

• 36

• 405

• 54

• 108

If the area of a rectangle is 9x² - 16, what is the perimeter?

• 12x

• 12x - 16

• 12 + 16

• 6x