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Preview questions
1. What is the sum of the interior angles of a triangle?
90 degrees · 180 degrees · 270 degrees · 360 degrees
2. In a triangle, if one angle is 90 degrees, what type of triangle is it?
Acute · Obtuse · Right · Equilateral
3. Which of the following is a property of an isosceles triangle?
All sides are equal · Two sides are equal · No sides are equal · All angles are acute
4. If two angles of a triangle are 45 degrees each, what is the third angle?
45 degrees · 90 degrees · 60 degrees · 30 degrees
5. What is the relationship between the sides of a right triangle according to the Pythagorean theorem?
a + b = c · a^2 + b^2 = c^2 · a^2 - b^2 = c^2 · a + b + c = 360
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