Exploring Interior Angles of Triangles

The video tutorial covers the concept of interior and exterior angles in triangles. It explains that the sum of the interior angles of a triangle is always 180 degrees. The teacher provides example problems to demonstrate how to calculate missing angles using this property. Students are encouraged to practice on their own and are given homework assignments to reinforce their understanding. The teacher emphasizes the importance of asking for help if needed.

What are interior angles?

• Angles on the inside of a circle

• Angles on the outside of a polygon

• Angles on the inside of a polygon

• Angles on the outside of a circle

Tags

CCSS.8.G.A.5

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

• 180 degrees

• 270 degrees

• 360 degrees

• 90 degrees

Tags

CCSS.8.G.A.5

If one angle of a triangle is 32 degrees and another is 48 degrees, what is the measure of the third angle?

• 100 degrees

• 90 degrees

• 80 degrees

• 60 degrees

Tags

CCSS.8.G.A.5

In a triangle, if one angle is a right angle (90 degrees) and another angle is 31 degrees, what is the measure of the third angle?

• 62 degrees

• 59 degrees

• 60 degrees

• 61 degrees

Tags

CCSS.8.G.A.5

What is the measure of an angle if the other two angles in the triangle are 86 degrees and 35 degrees?

• 61 degrees

• 60 degrees

• 59 degrees

• 62 degrees

Tags

CCSS.8.G.A.5

What is the measure of an angle if the other two angles in the triangle are 74 degrees and 35 degrees?

• 72 degrees

• 71 degrees

• 74 degrees

• 73 degrees

Tags

CCSS.8.G.A.5

If a triangle has angles of 59 degrees and 31 degrees, what is the measure of the third angle?

• 93 degrees

• 92 degrees

• 91 degrees

• 90 degrees

Tags

CCSS.8.G.A.5

What is the measure of an angle if the other two angles in the triangle are 51 degrees and 35 degrees?

• 94 degrees

• 95 degrees

• 96 degrees

• 97 degrees

Tags

CCSS.8.G.A.5

What is the measure of an angle if the other two angles in the triangle are 86 degrees and 51 degrees?

• 43 degrees

• 44 degrees

• 45 degrees

• 46 degrees

Tags

CCSS.8.G.A.5

What is the measure of an angle if the other two angles in the triangle are 90 degrees and 31 degrees?

• 59 degrees

• 60 degrees

• 62 degrees

• 61 degrees

Tags

CCSS.8.G.A.5