Mathematics Grade 4 Reviewer

Which of the following angles is an acute angle?

• 90°

• 45°

• 120°

• 180°

When you use a protractor to measure a 90° angle, what type of angle are you measuring?

• Acute angle

• Obtuse angle

• Right angle

• Reflex angle

What type of angle is formed by two lines that meet at a point and create a measure of more than 90° but less than 180°?

• Acute angle

• Right angle

• Obtuse angle

• Straight angle

Draw an angle of 60° using a protractor. What type of angle did you draw?

• Acute angle

• Right angle

• Obtuse angle

• Straight angle

Which of the following is the correct way to measure an angle of 120° using a protractor?

• Place the center of the protractor at the vertex of the angle and align one side of the angle with the 0° line of the protractor. Read the measurement at the other side of the angle.

• Place the center of the protractor at the vertex of the angle and align one side of the angle with the 90° line of the protractor. Read the measurement at the other side of the angle.

• Place the center of the protractor at the vertex of the angle and align one side of the angle with the 180° line of the protractor. Read the measurement at the other side of the angle.

• Place the center of the protractor at the vertex of the angle and align one side of the angle with the 45° line of the protractor. Read the measurement at the other side of the angle.

What is the sum of the interior angles of a triangle?

• 90°

• 180°

• 270°

• 360°

Which of the following is true about an equilateral triangle?

• It has two equal sides and one different side.

• It has three sides of different lengths.

• It has three equal sides and three equal angles.

• It has one right angle.

What type of quadrilateral has opposite sides that are equal and all four angles are 90°?

• Parallelogram

• Rectangle

• Rhombus

• Trapezoid

How many sides does a regular hexagon have, and what is the measure of each interior angle?

• 5 sides; 108°

• 6 sides; 120°

• 6 sides; 90°

• 4 sides; 90°

Which of the following statements is true about a square?

• All four sides are of different lengths.

• All four angles are right angles, and all sides are equal.

• Opposite sides are equal, but not all angles are right angles.

• It has exactly two equal sides and two different angles.