Geometry Pre-Test

Match each term with the correct definition.

• Obtuse Angle

• An angle measure greater than 90°.

• Acute Angle

• An angle measure less than 90°

• Right Angle

• An angle measure equal to 90°; this is noted on geometric figures by a box in a corner that is 90°.

Tags

MGSE4.G.1

Match each term with the correct definition.

• Line

• A part of a straight line that continues in one direction and has one endpoint.

• Line Segment

• A location represented by a dot.

• Vertex

• A straight line that continues in each direction with no endpoints.

• Ray

• A point where two or more line segments meet.

• Point

• Part of a straight line that begins and ends at two specific points.

Tags

MGSE4.G.1

​ (a)   are two lines that are always an equal distance apart.
​ (b)   are two lines that intersect at a 90° angle.

• Parallel lines
• Perpendicular lines

Tags

MGSE4.G.1

• curved

• diagonal

• parallel

• perpendicular

Answer explanation

The correct answer is perpendicular. Perpendicular lines intersect at a right angle, or 90 degrees.

Curved lines is incorrect because curved lines don’t meet at an angle; an angle is formed by the intersection of two lines, segments, or rays. Not all diagonal lines intersect. Parallel lines are lines that will never intersect; they will always be the same distance apart from one another.

Tags

MGSE4.G.1

Which figure has exactly one line of symmetry?

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Answer explanation

The correct answer is the isosceles triangle. An isosceles triangle has exactly one line of symmetry.

Square is incorrect because a square has four lines of symmetry. Quadrilateral is incorrect because the figure has no lines of symmetry. Circle is incorrect because a circle has an unlimited number of lines of symmetry.

Tags

MGSE4.G.3

Draw line segments on the grid to show ALL the lines of symmetry for this polygon.

Answer explanation

A line of symmetry divides a figure into two equal pieces that would fold onto each other. The shape drawn is a rhombus, which can be divided into two equal pieces with a segment through each pair of opposite angles.

Tags

MGSE4.G.3

Draw a five-sided shape that has 1 line of symmetry by adding 2 line segments to the three sides already drawn on the grid.

Answer explanation

Two possible correct responses are shown below. These responses are correct because the shape in each response has 5 sides and 1 line of symmetry. The 2 sides that are added intersect halfway between the vertical sides that are provided.

Tags

MGSE4.G.3

What type of triangle is pictured?

• Isosceles triangle

• Scalene triangle

• Right triangle

• Equilateral triangle

Tags

MGSE4.G.2

What type of triangle is pictured?

• Isosceles triangle

• Scalene triangle

• Right triangle

• Equilateral triangle

Tags

MGSE4.G.2

What type of triangle is pictured?

• Isosceles triangle

• Scalene triangle

• Right triangle

• Equilateral triangle

Tags

MGSE4.G.2