Geometry

Figures

100

Indicates a precise location; Typically labeled with uppercase letters

Point

200

A part of a line with two endpoints

Line Segment

300

Extends in both directions and does not end

Line

400

Has an endpoint on one end and an arrowhead on the other end

Ray

500

When two rays have the same endpoint, they form an...

Angle

Classifying Triangles

100

I am a triangle with one right angle. What type of triangle am I?

Right Triangle

200

I am a triangle with two sides of equal length. What type of triangle am I?

Isosceles Triangle

300

I am a triangle with one right angle and two sides of equal length. What type(s) of triangle am I?

Right Triangle and Isosceles Triangle

400

I am a triangle with all acute angles and all my sides are of equal length. What type(s) of triangle am I?

Acute Triangle and Equilateral Triangle

500

I am a triangle with one obtuse angle and no sides of equal length. What type(s) of triangle am I?

Obtuse Triangle and Scalene Triangle

Unknown Angle Measures

100

Angle RSD measures 90 degrees. Angle CFR measures x degrees. Together, both angles measure 180 degrees. What is x?

x = 90 degrees

200

Angle ABC measures 65 degrees. Angle CDE measures x degrees. Together, both angles measure 90 degrees. What is x?

x = 25 degrees

300

Angle GHI measures 45 degrees. Angle IJK measures x degrees. Together, both angles measure 90 degrees. What is x?

x = 45 degrees

400

Angle XYZ measures 121 degrees. Angle XLM measures x degrees. Together, both angles measure 180 degrees. What is x? What type of angle is angle XLM?

x = 59

Acute Angle

500

Angle DIG measures 134 degrees. Angle GLM measures x degrees. Together, both angles measure 180 degrees. What is x?

x = 46 degrees

Angles

100

I am an angle that measures 90 degrees. What type of angle am I?

Right Angle

200

I am an angle that measures less than 90 degrees. What type of angle am I?

Acute Angle

300

I am an angle that measures less than 180 degrees, but more than 90 degrees. What kind of angle am I?

Obtuse Angle

400

I am an angle that measures 180 degrees. What type of angle am I?

Straight Angle

500

I am an angle that measures more than 180 degrees. What type of angle am I?

Reflex Angle

Miscellaneous

100

I am the point where two lines intersect to create an angle

Vertex

200

I am a figure with an infinite number of lines of symmetry. What am I?

A circle

300

I have two pairs of parallel sides and four right angles. What shape am I?

Rectangle and Square

400

Draw a figure with at least one right angle and one pair of parallel sides.

Looks like: a square, rectangle, trapezoid

500

A clock shows 3:00. What type of angle is formed by the hour and minute hands?

A Right Angle