1) Which angle is less than 90 degree? a) Right angle b) Obtuse angle c) Acute angle d) None of the above 2) What type of angle is this?  a) Obtuse angle b) Right angle c) Straight angle d) Acute angle e) None of the above 3) What type of angle is this?  a) Right angle b) Acute angle c) Obtuse angle d) None of the above 4) What type of angle is this? a) Right angle b) Acute angle c) Obtuse angle d) None of the above 5) What angle is 180 degree? a) Straight angle b) Right angle c) Obtuse angle d) Acute angle 6) What is 90 degree angle? a) Straight angle b) Right angle c) Obtuse angle d) Acute angle

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