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If I have a right triangle, and one angle is 50 degrees and the second is 40 degrees, then the measure of third angle is       90        degrees.
Which describes the triangle?
1. Right
2. Acute
3. Obtuse
What kind of triangle is shown?
1. right
2. equilateral
3. isosceles
4. obtuse
Name the triangle.
1. Equilateral
2. Right
3. Scalene
What type of triangle has 3 equal sides and 3 equal angles that measure $60 deg$.
1. equilateral triangle
2. scalene triangle
3. isosceles triangle
4. right triangle
Which of the following best describes how triangles are classified?
1. overall size and side length
2. side length and angle measure
3. number of sides and overall size
4. angle measure and number of sides
Name the triangle.
1. Equilateral
2. Right
3. Scalene
What is a scalene triangle?
1. A triangle with 3 equal sides.
2. A triangle with 2 equal sides.
3. A triangle with no equal sides.
What is an isosceles triangle?
1. A triangle with 3 equal sides.
2. A triangle with 2 equal sides.
3. A triangle with no equal sides.
What kind of triangle is shown?
1. right
2. equilateral
3. isosceles
4. scalene
Which is true of scalene triangles?
1. they have no equal sides and no equal angles
2. they have three equal sides but no equal angles
3. they have two equal angles and two equal sides
4. they must have at least one right angle
A right triangle is a triangle that has one 90 degree angle.
1. True
2. False
A right triangle is a triangle having all three sides of equal length.
1. True
2. False
Fill in the correct geometric term.

An                      has 3 equal sides.
All triangles have 3 sides and right angles.
1. True
2. False
An                   obtuse triangle                  is a triangle with one angle greater than 90 degrees.
What is this triangle called? Why?
What kind of triangle is this? Why?
Name the polygon. Write the number of sides and vertices it has.

polygon:

sides:

vertices: