Finding Missing Angles in Triangles

In this video, Mr. J explains how to find missing angles in triangles. He emphasizes that the sum of angles in any triangle is always 180 degrees. The video includes two examples where given angles are added and subtracted from 180 to find the missing angle. The process is clearly demonstrated, ensuring viewers understand how to apply this method to any triangle.

What is the total sum of angles in any triangle?

• 360 degrees

• 180 degrees

• 90 degrees

• 270 degrees

Tags

CCSS.8.G.A.5

What is the sum of angles in a triangle?

• 100 degrees

• 180 degrees

• 360 degrees

• 200 degrees

Tags

CCSS.8.G.A.5

If two angles in a triangle are 75 degrees and 35 degrees, what is the third angle?

• 65 degrees

• 60 degrees

• 75 degrees

• 70 degrees

Tags

CCSS.8.G.A.5

How do you find a missing angle in a triangle?

• Add up two given angles and subtract from 360

• Multiply the two given angles

• Add up two given angles and subtract from 180

• Divide 180 by the sum of two given angles

Tags

CCSS.8.G.A.5

What is the correct method to calculate a missing angle in a triangle?

• Add all angles and divide by three

• Add 180 to the sum of two known angles

• Subtract the sum of two known angles from 100

• Subtract the sum of two known angles from 180

Tags

CCSS.8.G.A.5

How to find the missing angle when two angles are known?

• Add the two angles and subtract from 200

• None of the above

• Multiply the two known angles

• Subtract the sum of two angles from 180

Tags

CCSS.7.G.B.5

What is the missing angle if two angles of a triangle are 50 degrees and 100 degrees?

• 40 degrees

• 20 degrees

• 50 degrees

• 30 degrees

Tags

CCSS.8.G.A.5

Confirm the sum of 70 degrees, 75 degrees, and 35 degrees in a triangle.

• 200 degrees

• 170 degrees

• 180 degrees

• 190 degrees

Tags

CCSS.8.G.A.5

If the angles of a triangle are 70 degrees and 75 degrees, what is the third angle?

• 35 degrees

• 55 degrees

• 25 degrees

• 45 degrees

Tags

CCSS.8.G.A.5

If a triangle has angles of 50 degrees and 100 degrees, what is the third angle?

• 30 degrees

• 25 degrees

• 35 degrees

• 20 degrees

Tags

CCSS.8.G.A.5