Geometry Practice Questions几何练习题.docVIP

Geometry Practice Questions 1. In a 30-60-90 triangle, the length of the hypotenuse is 6. What is the length of the shortest side? 2 b. 3 c. d. e. 2. What is the area of a circle with a diameter of 16? 8 b. 16 c. 64 d. 128 e. 256 3. The figure below contains only horizontal and vertical lines. Calculate its perimeter. 27 b. 33 c. 36 d. 42 e . 48 4. Find the measure of the missing angle in the triangle below. 35° b. 40° c. 45° d. 50° e. 55° 5. The circumference of a circle is 30. What is its area? 15 b. 225 c. 400 d. 900 e. 3000 6. What is the sum of the measures of the interior angles of a hexagon? 540° b. 720° c. 810° d. 1080° e. 1440° 7. Find the area of the triangle below. 20 b. 30 c. 35 d. 40 e. 80 8. The figure below is a parallelogram with two angles given in terms of?x. Determine the value of?x. 9 b. 10 c. 20 d. 22 e. 24 9. Which of the following could be the side lengths of a right triangle? 3, 13, and 14 b. 4, 5, and 6 c. 4, 9, and 10 5, 10, and 15 e. 5, 12, and 13 10. The figure below is an equilateral triangle with sides of length 6. What is the area of the triangle? 12 b. 18 c. 36 d. e. Answer Key 1. B.?In a 30-60-90 triangle, the ratio of the lengths of the sides is 1:??:2. In other words, the length of the longer leg is???times the length of the shorter leg, and the hypotenuse is twice the length of the shorter leg. Therefore, the smallest side is half the length of the hypotenuse, so its length is?. 2. C.?The area of a circle is given by the formula?A?=?2, where?r?is the radius of the circle. The problem provides the diameter of the circle, which is twice the radius. So, Now substitute this value into the area formula and calculate the area. 3. D.?The perimeter of a figure is the length around it. To find the perimeter of a polygon, add the lengths of its sides. Start by filling in the missing lengths of the sides. For instance, the length