
Triangle Sum, Exterior Angle and Isosceles Triangle Theorem
Authored by Wayground Content
Mathematics
9th - 12th Grade
Used 1+ times

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15 questions
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1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
If an exterior angle measures 110 degrees, what is the sum of the two opposite interior angles?
70 degrees
80 degrees
90 degrees
60 degrees
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
What is the Isosceles Triangle Theorem?
In an isosceles triangle, the angles opposite the equal sides are also equal.
The sum of the angles in an isosceles triangle is always 180 degrees.
An isosceles triangle has three equal sides.
The base angles of an isosceles triangle are always 90 degrees.
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
If one angle of a triangle is 60 degrees, what is the maximum possible measure of the other two angles?
90 degrees
120 degrees
150 degrees
180 degrees
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
What is an Exterior Angle of a triangle?
An angle formed by one side of the triangle and the extension of an adjacent side, equal to the sum of the two opposite interior angles.
An angle formed by two sides of the triangle meeting at a vertex.
An angle that is always greater than 90 degrees in a triangle.
An angle that is formed by the intersection of two lines outside the triangle.
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
If one angle of a triangle is 120 degrees, can the triangle exist?
Yes, a triangle can exist with an angle measuring 120 degrees.
No, a triangle cannot exist with an angle measuring 120 degrees, as the sum of the other two angles would need to be 60 degrees, which is not possible.
Yes, but it would be an obtuse triangle.
No, the triangle would be invalid because all angles must be less than 90 degrees.
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
How do you determine if a triangle is isosceles?
A triangle is isosceles if at least two of its sides are equal in length.
A triangle is isosceles if all three sides are equal in length.
A triangle is isosceles if it has one right angle.
A triangle is isosceles if it has no equal sides.
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
If a triangle has angles measuring 30 degrees and 60 degrees, what is the measure of the third angle?
60 degrees
90 degrees
120 degrees
150 degrees
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