Exploring Interior Angles of Triangles

What is the sum of the interior angles of any triangle?

• 360 degrees

• 270 degrees

• 180 degrees

• 90 degrees

Tags

CCSS.8.G.A.5

In the first example, what is the measure of angle B?

• 55 degrees

• 35 degrees

• 90 degrees

• 45 degrees

Tags

CCSS.7.G.B.5

What is the value of x in the first example equation?

• 20

• 15

• 10

• 5

Tags

CCSS.8.G.A.5

In the second example, what is the combined coefficient of x after combining like terms?

• 19x

• 13x

• 23x

• 9x

Tags

CCSS.7.EE.A.1

What is the measure of angle D in the second example?

• 37 degrees

• 68 degrees

• 75 degrees

• 90 degrees

Tags

CCSS.7.G.B.5

What is the value of x in the second example equation?

• 7

• 4

• 5

• 6

Tags

CCSS.8.G.A.5

In the third example, what is the value of x after solving the equation?

• 30

• 25

• 35

• 20

Tags

CCSS.4.MD.A.2

What is the measure of angle J in the descriptive triangle problem?

• 60 degrees

• 45 degrees

• 30 degrees

• 15 degrees

Tags

CCSS.8.G.A.5

What is the measure of angle K in the descriptive triangle problem?

• 30 degrees

• 45 degrees

• 90 degrees

• 60 degrees

Tags

CCSS.8.G.A.5

What is the measure of angle L in the descriptive triangle problem?

• 135 degrees

• 120 degrees

• 105 degrees

• 90 degrees

Tags

CCSS.8.G.A.5