2D Shapes
Name a 2D shape that has 4 equal sides and 4 right angles.
Sqaure
What do we call a side where two edges meet on a polygon?
Vertex
Which angle is smaller than a right angle: acute, right, or obtuse?
Acute
Name a real-world object that is shaped like a circle.
Clock face, plate, coin.
What do we call sliding a shape so it moves but does not turn or flip?
Translation (slide).
Describe a shape with 3 sides. What is it called?
Triangle
A rectangle has opposite sides that are equal and parallel. True or false?
True
Show (draw or describe) an angle that is a right angle in a classroom (give a real example).
The corner of a book or the corner of a sheet of paper; it's 90°.
Name a real-world object that is a rectangular prism (3D), then name its 2D face shape.
A cereal box is a rectangular prism; its face is a rectangle.
What is another word for a flip across a line (mirror image)?
Reflection
How many sides and vertices does a hexagon have?
6 sides, 6 vertices
List two properties that make a square different from a rectangle.
Square has 4 equal sides and 4 right angles; rectangle has opposite sides equal but not all four equal.
Estimate whether an angle that opens about halfway between 0° and 180° is acute, right, or obtuse. Explain.
About 90° is right; halfway between 0 and 180 is 90°, so right angle.
Find a stop sign in real life: what polygon is it and how many sides does it have?
Stop sign is an octagon with 8 sides.
Describe a 90° turn clockwise of an L-shape. Which transformation is that?
Rotation of 90° clockwise.
Tell whether this shape is a polygon: a circle. Explain your answer in one sentence.
Circle is not a polygon because it has no straight sides or vertices.
A kite has two pairs of adjacent sides equal. Draw or describe a kite and label one pair of equal sides.
Accept drawing/description showing adjacent equal sides; label AB = AD for example.
Two angles together make a right angle. One is 30°. What is the other angle?
60° (because 30° + 60° = 90°).
Look at a soccer ball pattern: which 2D shapes do you see repeated on its surface? Name at least two.
Pentagons and hexagons (or pentagons and hexagons on traditional soccer balls).
If you rotate a square 180°, does it look the same as before? Explain why.
Yes — a square rotated 180° maps onto itself because opposite sides and angles match.
Name a 2D shape that always has exactly one pair of parallel sides. Give the shape name and a quick reason.
Trapezoid (one pair of parallel sides).
Classify this quadrilateral: opposite sides are parallel, but only one pair of adjacent sides is equal. Name it or explain why no common name fits.
Likely none of the standard names fits exactly; explain properties (may be an irregular parallelogram or kite depending on description).
A straight line makes an angle of how many degrees? Use that to find an unknown angle if one part is 110° and the other part is x.
Straight line is 180°. If one part is 110°, the other x = 180° − 110° = 70°.
Describe a real-world example of a shape that has rotational symmetry (explain what rotates and how it looks the same).
A windmill or pinwheel has rotational symmetry—rotate 90° or 180° and it looks the same depending on blades.
A triangle is reflected across a line, then translated 3 units right. Describe the final position compared to the original (mention orientation and location).
After reflection the triangle is mirrored (orientation reversed). After translating 3 units right, its position is shifted right from the mirrored location; side order is reversed compared to the original.