What is the first step in solving a problem involving angles in triangles?
Understanding Angles in Triangles
Interactive Video
•
Mia Campbell
•
Mathematics
•
7th - 10th Grade
•
7 plays
•
Medium
The video tutorial focuses on solving problems involving parallel lines and triangles. It begins with a classic problem setup, where the goal is to find the measure of a specific angle. The instructor guides through solving the first triangle by using the sum of angles property. Then, the concept of supplementary angles is explained, followed by the exterior angle theorem. Finally, the solution to the second triangle is demonstrated, reinforcing the understanding of angle calculations in geometric figures.
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Determine the sum of all angles
Calculate the area of the triangle
Identify the parallel lines
Find the given angles
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If two angles in a triangle are 50 and 64 degrees, what is the measure of the third angle?
66 degrees
70 degrees
76 degrees
80 degrees
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the relationship between supplementary angles?
They are complementary
They add up to 90 degrees
They are equal
They add up to 180 degrees
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If an angle is supplementary to a 66-degree angle, what is its measure?
124 degrees
120 degrees
130 degrees
114 degrees
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is an exterior angle in a triangle?
An angle that is equal to the interior angles
An angle formed by extending a side of the triangle
An angle that is less than 90 degrees
An angle inside the triangle
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How is an exterior angle related to the remote interior angles?
It is equal to the sum of the remote interior angles
It is half of the remote interior angles
It is double the remote interior angles
It is unrelated to the remote interior angles
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If the exterior angle is 114 degrees, what is the sum of the remote interior angles?
130 degrees
120 degrees
114 degrees
100 degrees
8.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the measure of the third angle if the other two angles in a triangle are 114 and 31 degrees?
45 degrees
35 degrees
65 degrees
55 degrees
9.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What property is used to find the third angle in a triangle?
Sum of angles in a triangle
Law of sines
Law of cosines
Pythagorean theorem
10.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the final step in solving for an unknown angle in a triangle?
Multiply the known angles
Add the known angles
Divide the known angles
Subtract the known angles from 180 degrees
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