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

Understanding the Law of Sines

Interactive Video
•
Mathematics
•
9th - 10th Grade
•
Hard

Amelia Wright
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
360 degrees
270 degrees
90 degrees
180 degrees
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is an oblique triangle?
A triangle with one angle greater than 90 degrees
A triangle with no right angles
A triangle with all angles less than 90 degrees
A triangle with one right angle
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the Law of Sines, how are the angles and sides denoted?
Angles are lowercase letters, sides are uppercase letters
Angles are numbers, sides are letters
Angles are uppercase letters, sides are lowercase letters
Angles and sides are both numbers
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When using the Law of Sines, what is required to solve Case 1?
Three side lengths
Two angles and one side
One angle and one side
Two sides and one non-included angle
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In Case 1, if you know two sides and a non-included angle, what is the next step?
Use the Law of Cosines
Find the area of the triangle
Use the Law of Sines to find the missing angle
Use the Pythagorean theorem
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the inverse sine function used for in Case 1?
To find the measure of an angle
To find the length of a side
To find the area of the triangle
To find the perimeter of the triangle
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In Case 2, if you know two angles, how do you find the third angle?
Subtract the sum of the known angles from 180 degrees
Add the known angles
Multiply the known angles
Divide the sum of the known angles by 2
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