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This worksheet covers Symmetry and Angles, which is part of the Geometry module in the Elementary Math course. Practice problems are designed to strengthen key concepts and build confidence.
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Set 4 — Mastery
What type of angle measures exactly 90 degrees?
Acute angle
Obtuse angle
Right angle
Straight angle
If two angles are complementary, what is the sum of their measures?
90 degrees
180 degrees
270 degrees
360 degrees
Which shape below has rotational symmetry of order 4?
Rectangle
Square
Triangle
Pentagon
What is the angle formed when two lines intersect and create an angle of less than 90 degrees?
Acute angle
Obtuse angle
Right angle
Straight angle
If a triangle has one angle that measures 90 degrees, what type of triangle is it?
Acute triangle
Obtuse triangle
Right triangle
Equilateral triangle
What do we call a line that divides a shape into two mirror-image halves?
Angle bisector
Line of symmetry
Perpendicular line
Transversal line
Which angle is formed when two lines create a straight line?
Acute angle
Obtuse angle
Right angle
Straight angle
Which of the following is NOT a property of symmetrical shapes?
They can be divided into two identical halves.
They have unequal sides.
They look the same on both sides of the line of symmetry.
They can have multiple lines of symmetry.
An angle measures 120 degrees. What type of angle is this?
Acute angle
Right angle
Obtuse angle
Straight angle
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