If 2 of the angles of a triangle are 30 and 70 degrees, the third angle measures...
80
100
60
90
5. Multiple Choice
1 minute
1 pt
Name this triangle by its angles and sides.
obtuse, isosceles
acute isosceles
right, scalene
acute, equilateral
6. Multiple Choice
1 minute
1 pt
What is the measure of angle b?
36o
56o
63o
117o
7. Multiple Choice
1 minute
1 pt
The Triangle Sum Theorem states that the sum of all angles in a triangle is ______.
45°
90°
180°
360°
8. Multiple Choice
1 minute
1 pt
. . . . What is the name of this kind of triangle?
Right
Scalene
Isosceles
Equilateral
9. Multiple Choice
1 minute
1 pt
. . . What is the name of this kind of triangle?
Right
Scalene
Isosceles
Equilateral
10. Multiple Choice
1 minute
1 pt
A triangle has angle measurements of 26°, 59°, and 95°. What kind of triangle is it?
acute triangle
right triangle
obtuse triangle
none of the above
11. Multiple Choice
1 minute
1 pt
What type of triangle is this?
equilateral
obtuse
scalene
isosceles
12. Multiple Choice
1 minute
1 pt
A triangle has one angle that measures 61 degrees, one angle that measures 44 degrees, and one angle that measures 75 degrees. What kind of triangle is it?
right triangle
obtuse triangle
acute triangle
equilateral triangle
13. Multiple Choice
1 minute
1 pt
A triangle has 2 angles that each measure 71°. What kind of triangle is it?
right triangle
obtuse triangle
isosceles triangle
equiangular triangle
14. Multiple Choice
1 minute
1 pt
An angle that measures less than 90°
Acute
Obtuse
Right
Straight
15. Multiple Choice
1 minute
1 pt
An angle that measures greater than 90° but less than 180°
Right
Straight
Obtuse
Acute
16. Multiple Choice
1 minute
1 pt
This is what kind of angle?
right
acute
obtuse
straight
17. Multiple Choice
1 minute
1 pt
Name this triangle.
acute triangle
right triangle
straight triangle
obtuse triangle
18. Multiple Choice
1 minute
1 pt
If we classify the triangles according to their angles and sides ,how many types(in total) of triangles are there?
4
5
3
6
19. Multiple Choice
1 minute
1 pt
Say 'TRUE' or 'FALSE' The angles of a triangle may be 90°, 20°, 90°