Exploring Triangle Angles and the Sum Theorem

What is the total sum of the angles in any triangle?

• 90 degrees

• 180 degrees

• 270 degrees

• 360 degrees

Which equation represents the sum of the angles in the given triangle?

• 12x + 8 + 55 + 8x - 3 = 180

• 12x + 8 + 55 + 8x - 3 = 90

• 12x + 8 + 55 + 8x - 3 = 270

• 12x + 8 + 55 + 8x - 3 = 360

What is the value of x after solving the equation?

• 7

• 6

• 5

• 4

How do you calculate the measure of angle P?

• 55

• x + 8

• 8x - 3

• 12x + 8

What is the measure of angle P when x = 6?

• 85 degrees

• 80 degrees

• 75 degrees

• 70 degrees

How do you calculate the measure of angle R?

• 12x + 8

• 8x - 3

• x - 3

• 55

What is the measure of angle R when x = 6?

• 40 degrees

• 45 degrees

• 55 degrees

• 50 degrees