Geometry Challenge

What type of angle measures exactly 90 degrees?

• Right angle

• Acute angle

• Obtuse angle

• Straight angle

Calculate the missing angle in a triangle with angles 45° and 60°.

• 90°

• 75°

• 30°

• 105°

Explain the concept of parallel lines.

• Parallel lines are two lines that converge at a single point.

• Parallel lines are two lines in a plane that never intersect.

• Parallel lines are two lines that form a triangle when intersected.

• Parallel lines are two lines that intersect at a right angle.

How are equilateral and isosceles triangles classified based on sides?

• Equilateral triangles have no sides of equal length, while isosceles triangles have at least one side of equal length.

• Equilateral triangles have all sides of equal length, while isosceles triangles have at least two sides of equal length.

• Equilateral triangles have two sides of equal length, while isosceles triangles have all sides of equal length.

• Equilateral triangles have at least two sides of equal length, while isosceles triangles have all sides of equal length.

Define complementary angles.

• Two angles that add up to 180 degrees

• Two angles that form a straight line

• Two angles that are equal in measure

• Two angles that add up to 90 degrees.

What is the sum of interior angles in a quadrilateral?

• 180 degrees

• 270 degrees

• 360 degrees

• 450 degrees

Describe the properties of a circle.

• The main characteristics of a circle are color, texture, and weight.

• Properties of a circle include height, width, and volume.

• Properties of a circle include radius, diameter, circumference, and area.

• A circle has corners and edges.

How can you construct an equilateral triangle?

• Use a protractor to measure and draw three angles of 60 degrees each.

• Cut a circle into three equal parts and connect the points where the cuts intersect the circumference.

• Draw three sides of different lengths and label it as an equilateral triangle.

• Draw a circle with the desired radius, then mark three points on the circumference. Connect these points to form the sides of the equilateral triangle.

What are the properties of a parallelogram?

• All angles are right angles

• Opposite sides are parallel, Opposite sides are equal in length, Opposite angles are equal, Consecutive angles are supplementary, Diagonals bisect each other.

• Diagonals are perpendicular

• All sides are equal

Identify the type of angle formed when two lines intersect.

• Obtuse angle

• Complementary angle

• Vertical angle

• Adjacent angle