Download Summative Assessment Answers - Western Reserve Public Media

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Summative Assessment Answers
1. How many ways can you name or classify this shape?
Answer: The shape is a polygon and an isosceles triangle.
2. Draw an acute isosceles triangle.
Answer: Any triangle that has three angles less than 90 degrees and two congruent sides is correct.
3. What makes a right angle a right angle?
Answer: A right angle is an angle that measures 90 degrees.
4. What makes an obtuse angle an obtuse angle?
Answer: An obtuse angle is an angle that measures more than 90 degrees and less than 180 degrees.
5. List all the properties of this shape:
Answer: The shape has two pairs of parallel lines, two pairs of congruent sides and four right angles.
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6. List all the ways to name or classify the shape.
Answer: The shape is a polygon, a quadrilateral, a parallelogram and a rectangle.
7. How do you know if two lines are perpendicular?
Answer: Two lines are perpendicular if they form right angles where they meet.
8. Draw an isosceles trapezoid.
Answer: Any trapezoid with two pairs of adjacent and congruent angles is correct.
9. List the properties that make the figure that you drew an isosceles trapezoid.
Answer: One pair of parallel lines and two pairs of adjacent and congruent angles.
10. Read the following statement: “All rhombuses are parallelograms, but only some parallelograms are rhombuses.” Explain why this
statement is true.
Answer: Rhombuses and parallelograms both have two pairs of parallel sides, but rhombuses have four congruent sides and not
all parallelograms have four congruent sides.
11. Read the following statement: “All squares are rectangles, but only some rectangles are squares.” Explain why this statement is true.
Answer: Squares and rectangles both have two pairs of parallel sides and four right angles, but squares have four congruent
sides.
Accessible Shapes: Geometry
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