How many sides does a triangle have?
2
3
4
What is the sum of angles of a triangle?
120
140
180
What is the third angle if two of the angle is 45°?
90°
60°
45°
Which type of triangle have one 90° angle?
Right
Acute
Obtuse
The sides of a triangle are 7, 10, and 12. Find the length of the longest side of a similar triangle whose shortest side is 21.
12
21
36
Which of the following triangles are always similar?
Right triangle
Obtuse triangle
Equilateral triangle
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