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Name: ______________________________ Period: ______ Date: ___________ STAAR Review-Category 3: Geometry and Spatial Reasoning Directions: You must show your work to solve all problems. 1. Which statement about polygons is NOT true? 4. Which pair of scissors is open to an acute angle? A. If a quadrilateral has exactly two obtuse angles, then each of the other two angles is a right angle. B. If a figure is a rectangle, then the sum of the measures of two angles is 180°. C. If all the angles of a triangle are congruent, then the measure of each angle is 60°. D. If a triangle has a right angle, then both of the other angles are acute. 2. Mona’s front yard is in the shape of a rhombus and her backyard is in the shape of an isosceles triangle. How many degrees does angle B measure? 5. Which of the following is NOT a possible description of a triangle? A. 3 acute angles 3. What is the circumference of a circle with a diameter of 3 yards? Let B. 2 acute and 1 obtuse angle C. 2 right angles and 1 acute angle D. 2 acute angles and 1 right angle 6. Julian and his mom are sharing a pizza. 8. Three of the vertices of a rectangle are (2.5, 3), (8, 3), and (8, 7). Which ordered pair would complete the rectangle? Which expression can Julian and his mom use to find the circumference of the whole pizza if the radius of the A. (3, 7) pizza pan is 9 inches? B. (7, 3) A. B. ( ( C. D. ) ) ( ( C. (7, 2.5) D. (2.5, 7) ) ) 9. The circumference of a circular pool is 48 feet. Which of the following 7. If you know the distance around the Earth at the equator, how can you find the diameter? expressions best represents the radius of the pool? A. B. 48 ∙ C. D. 48 ∙ 10. The circumference of a circle is 24 A. Multiply by 3 B. Divide by 3 C. Divide by the radius D. Divide by the diameter centimeters. Find the approximate radius. 11. Hannah’s math teacher asked her to 13. For math class, Dan had to design a identify the two streets whose swimming pool in a new shape. This intersection forms a right angle. drawing shows the swimming pool Which two streets did she choose? that Dan designed. What is the measure of angle Y? A. 45° B. 90° C. 35° D. 135° A. Bluebird Drive and Lark Avenue 14. The length of a rectangle is 16 B. Bluebird Drive and Robin Street centimeters and the area is 48 square C. Lark Avenue and Robin Street centimeters. Which method can be D. Herron Circle and Robin Street used to find the width of the rectangle? A. Find the quotient when 48 is 12. Which of the following statements is true? divided by 16. B. Find the product of 48 and 16. A. The length of the radius is the C. Find the difference between 48 and 16. length of the diameter. B. The length of the radius of a circle D. Find the sum of 16 and 48. is equal to the length of the diameter. C. The length of the radius of a circle is twice the length of the diameter. D. The length of the radius of a circle is the length of the diameter. 15. The perimeter of an equilateral triangle is 72 meters. Which expression shows how to find the length of each side? A. B. 72 + 72 + 72 C. D. 180 - 72 16. Find the measure of to the 19. Shelly drew two circles on her paper. nearest degree. What is the circumference of the outer circle? 17. The diameter of a circle is 12 inches. 20. Which point is located at the ordered What is the approximate pair (6, 8)? circumference? 18. Sixth grade students created a circular graph for the science fair. The diameter of the graph was 2 feet. How does the diameter compare to the circumference of the circle? A. The diameter is about the circumference. B. The diameter is about 2 times the circumference. C. The diameter is about the circumference. D. The diameter is about 3 times the circumference. A. Point P B. Point Q C. Point R D. Point S