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If the front view and top view of a triangular prism with equal edge lengths are square and regular triangle respectively, then the left view is () A. Rectangle B. square C. diamond D. regular triangle
The height of the left view of the triangular prism must be the edge length, and the width is equal to the height of the regular triangle in the top view. This height must be less than the edge length, so the left view is rectangular. So select a
If the front view and top view of a triangular prism with equal length of all edges are square and regular triangle respectively, the front view is square
One side of the rectangle is the length of the edge, and the other side is the height of the bottom. Do you think I think it's a square
If the front view and top view of a triangular prism with equal length of all edges are square and regular triangle respectively, the front view is square
You said that the main view and the top view are square and regular triangle respectively. Of course, the main view is square~
However, the left view is a rectangle, with the edge length on both sides and the height of the regular triangle in the top view!
If the front view and top view of a triangular prism with equal edge lengths are square and regular triangle respectively, then the left view is ()
A. Rectangle B. square C. diamond D. regular triangle
The height of the left view of the triangular prism must be the edge length, and the width is equal to the height of the regular triangle in the top view. This height must be less than the edge length, so the left view is rectangular. So select a
The direct view and three views of triangular prism abc-a1b1c1 (the main view and top view are square, and the left view is isosceles right triangle) are shown in the figure, D is the midpoint of AC. (1) verification: Ab1 ‖ plane bdc1; (2) verification: A1C ⊥ plane bdc1; (3) calculation of the tangent value of dihedral angle a-bc1-d
(1) Prove: from the three views, the geometry is straight triangular abc-a1b1c1, the side b1c1cb is a square with side length of 2, the bottom ABC is an isosceles right triangle, ab ⊥ BC, ab = BC = 2 In △ cab1, O and D are the midpoint of B1C and AC, respectively
If the front view and top view of a triangular prism with equal edge lengths are square and regular triangle respectively, then the left view is ()
A. Rectangle B. square C. diamond D. regular triangle
The height of the left view of the triangular prism must be the edge length, and the width is equal to the height of the regular triangle in the top view. This height must be less than the edge length, so the left view is rectangular. So select a
The front view and the top view are the same rectangle, and the left view is a square. What is the object
Cuboid
We see the sky is blue on the earth. Why is it black on the moon
Hurry!
Why is the sky black on the moon? We need to find out why the sky is blue on the earth first. Here is a concept of "Rayleigh scattering" (for details, you can check Baidu Encyclopedia). The sky originally has no color, but the light refracts in the clouds, so it looks blue. The sunlight passes through the light
Different colors on the globe have different meanings. Blue means (), green means (), yellow means (), brown means ()
Green: Plain
Yellow Brown: Hill / Mountain / plateau, the darker the color, the higher
Light blue: Lake
Dark blue line: River
Different shades of blue: Ocean, the darker the color, the darker
White: snow
White, green, blue, brown
white green blue brown yellow
Yellow and blue pigments are known to mix to produce green pigments
It is known that yellow pigment and blue pigment can be mixed to produce green pigment. In a dark room, when a beam of green light is used to illuminate a piece of yellow paper, we can see the color of the paper
Green
Both yellow and blue light reflect, so it still looks green
RELATED INFORMATIONS
- 1. Red pigment + yellow pigment red pigment + blue pigment yellow pigment + blue pigment
- 2. English translation English
- 3. The side length of square ABCD is 4, M is the middle point of AD, the moving point e moves on the line AB, connects EM and extends the intersection line CD and F, and makes the intersection line of EF through M BC and G, connect eg and FG, prove that let AE = x, the area of △ EGF = y, find the analytic formula and value range of Y and X. can △ GEF be an equilateral triangle during the movement of 2 points e? Please explain the reason
- 4. The area of quadrilateral ABCD is 30, e and F are the three equal parts of AB, m and N are the three equal parts of DC. The area of efnm is calculated
- 5. The right figure ABCD is a right angled trapezoid. Take CD as the axis and rotate the trapezoid around this axis to get a rotating body. How many cubic centimeters is its volume?
- 6. 17. As shown in the figure, in the pyramid p-abcd, the bottom surface is a right angled trapezoid, ad ‖ BC, ∠ bad = 90 °, PA ⊥ bottom surface ABCD, and PA = ad = AB = 2BC, m, n respectively If the first question is proved, ask the second question. Please don't use vectors
- 7. In a park, three channels with the same width are built on a rectangular ground ABCD with a length of 40 meters and a width of 26 meters (as shown in the figure), two of which are parallel to AB and the other is vertical to ab. these three channels divide the ABCD into small rectangular blocks with an area of 144 square meters, and plant six colors of flowers and plants respectively to calculate the width of the channel
- 8. As shown in the figure, there is a quadrilateral piece of paper ABCD, ab ‖ CD, ad ‖ BC, ∠ a = 60 degrees. Fold the paper along the crease Mn and PQ respectively, so that point a coincides with point E on the edge of AB, point C coincides with point F on the edge of CD, eg bisection ∠ MEB intersects CD at g, FH bisection ∠ PFD intersects AB at h. try to explain: (1) eg ‖ FH; (2) me ‖ PF
- 9. As shown in the figure, in square ABCD, if DP intersects the extension lines of AC, AB and CB at m, N, P, Mn = 1, NP = 3, then DM=______ ．
- 10. In rectangular trapezoid ABCD, ad is parallel to BC, ∠ a = 90 degrees, ab = ad = 1 / 2BC, and m and N are the midpoint of AD and DC respectively, connecting BM, Mn and BN. Excuse me: triangle What is the triangle of BmN
- 11. The side length of the bottom of the hexagonal prism is equal to 1, and the side length is 2. After the side of the prism is expanded along a side edge, the area of the side expansion is calculated
- 12. The square ABCD is rotated clockwise around point a to obtain the quantitative relationship of square aefg, the intersection of edge FG and BC, aefc, the intersection of edge FG and BC, h, Hg and Hb
- 13. The quadrilateral ABCD and the quadrilateral aefg are both rhombic. The point E is on the ad side and the point G is on the extension line of the Ba side As shown in Figure 1, BD and CE are their diagonals. The extension line of Ge intersects BD at point Q and DC at point M. verify: GM ⊥ BD
- 14. As shown in the figure, in ▱ ABCD, e and F are two points on the diagonal BD, and be = DF
- 15. A piece of rectangular paper with a length of 5cm and a width of 4cm is rotated around its length and width respectively to form two cylinders. Which cylinder has the largest volume should be estimated first and then calculated
- 16. The length of a rectangle is 5cm and the width is 4cm. After rotating around the short side, you will get a cylinder whose volume is () Chasing 50 points
- 17. The length of a rectangle is 10cm, the width is 3cm, take the length as the axis, rotate a circle to get a cylinder, calculate the volume of the cylinder
- 18. The length of a rectangle is 5cm and the width is 12cm. Taking one of the edges as the axis, the rectangle is rotated for one circle, and the volume of the three-dimensional figure is ()
- 19. The length and width of a rectangle are 8cm and 5cm respectively. The length and width of the rectangle are used for sleeve rotation (as shown in the figure) to form two cylinders The length of a rectangle is 8cm and the width is 5cm. The length and width of the rectangle are used for sleeve rotation (as shown in the figure) to form two cylinders. Compare the volume of these two cylinders, which one is larger? How much bigger?
- 20. E. F is the edge BC of square ABCD with side length 4, the point on CD, CE = 1, CF = 4 / 3, the extension line of line Fe intersecting AB is at g, passing through a moving point h on line FG, making HM perpendicular to Ag and m, let HM be x, and the area of rectangle amhn be y 1. Find the function expression 2 when x =? Amhn, what is the largest area When x = 3, the maximum value of Y is 12 How to - -,