Exploring Missing Triangle Angles

The video tutorial explains how to find missing angles in triangles by using the property that the sum of interior angles in any triangle is 180 degrees. It provides step-by-step examples, including cases with and without 90-degree angles, and introduces the concept of supplementary angles. The tutorial emphasizes careful calculation and borrowing techniques for subtraction.

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

• 270 degrees

• 360 degrees

• 90 degrees

• 180 degrees

Tags

CCSS.8.G.A.5

If angle A is 37 degrees and angle B is 24 degrees, what is the measure of the third angle in the triangle?

• 119 degrees

• 129 degrees

• 123 degrees

• 119 degrees

Tags

CCSS.8.G.A.5

In a right triangle, if one angle is 52 degrees, what is the measure of the other non-right angle?

• 48 degrees

• 38 degrees

• 58 degrees

• 28 degrees

Tags

CCSS.8.G.A.5

What is the measure of angle C if the other two angles in a right triangle are 90 degrees and 25 degrees?

• 75 degrees

• 55 degrees

• 65 degrees

• 85 degrees

Tags

CCSS.8.G.A.5

In a triangle where the angles are 70 degrees and 50 degrees, what is the measure of the third angle?

• 90 degrees

• 70 degrees

• 60 degrees

• 80 degrees

Tags

CCSS.8.G.A.5

If a triangle has angles of 71 degrees and 38 degrees, what is the measure of the third angle?

• 71 degrees

• 61 degrees

• 91 degrees

• 81 degrees

Tags

CCSS.8.G.A.5

What is the sum of the angles on a straight line?

• 90 degrees

• 180 degrees

• 270 degrees

• 360 degrees

Tags

CCSS.7.G.B.5

If one angle on a straight line is 148 degrees, what is the measure of the supplementary angle?

• 42 degrees

• 32 degrees

• 62 degrees

• 52 degrees

Tags

CCSS.7.G.B.5

In a triangle with angles 56 degrees and 32 degrees, what is the measure of the third angle?

• 92 degrees

• 98 degrees

• 88 degrees

• 82 degrees

Tags

CCSS.8.G.A.5

What is the term for angles that add up to 180 degrees?

• Vertical angles

• Adjacent angles

• Supplementary angles

• Complementary angles

Tags

CCSS.7.G.B.5