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The figure below is an arbitrary triangle. Draw a line segment to divide the triangle into two triangles with an area ratio of 1:2
From a corner guide bar to the opposite side 1 / 3 is OK
Draw a line in a triangle and divide the triangle into two parts so that the area ratio of the two parts is 3:2
A point with a base of 3:2 and a vertex
A right angled trapezoid, 1 cm in top and 2 cm in bottom and 3 cm in height, should be drawn in the figure to make it into two four with the same shape and equal area
As shown in the figure, right angled trapezoid ABCD ad = 1, ab = 3, AC = 2 ad ∥ BC, ab ⊥ BC. If the key point D is made on CD, and f (BF = 1) is made on AB to connect EF, then the quadrilateral ADEF and the quadrilateral BFEC have the same shape and area
Drawing a line segment in an isosceles trapezoid can divide it into two identical () A. Trapezoid B. Parallelogram C. Triangle
As shown in the figure, points E and F are the midpoint of the upper and lower bottom of the isosceles trapezoid ABCD,
Because isosceles trapezoid is an axisymmetric figure, its symmetry axis is the straight line where the line between the middle point of the upper bottom and the lower bottom is located,
Connecting EF, EF divides the trapezoid into two identical trapezoids
.
Therefore, a
Draw a line segment in a trapezoid and divide it into () 1. Two rectangles 2. Two triangles 3. Two trapezoids 4. Two parallelograms
Drawing a line segment in a trapezoid can divide it into (2. Two triangles; 3. Two trapezoids)
You can make four triangles by drawing a line in the picture below You can draw a line in the graph below so that you can find four triangles in the graph
What about your picture
How to draw a line segment into three triangles in a trapezoid
I can't draw it At least two lines?
In a right triangle, if one angle is 30 degrees and the length of the hypotenuse is 12, then the length of the two sides of the right triangle is ()
Sina30 degree = 1 / 2
Because the bevel is 12
So the other two sides are 6, 6, 3
What are the characteristics of an angle of 15 degrees in a right triangle?
In a right triangle, the longer right side is (2 + √ 3) times of the side opposite the 15 degree angle,
The hypotenuse is (√ 2 + √ 6) times of the edge opposite the 15 degree angle
The derivation of the edge of an isosceles right triangle is that. The relationship of the sides 1:1: root 2
The two sides of an isosceles right triangle are equal, set as unit 1
According to Pythagorean theorem, if the hypotenuse is 1 ^ 2 + 1 ^ 2, then the root sign is root 2
So the ratio is 1:1: root 2
RELATED INFORMATIONS
- 1. In a right triangle, the side of a 15 degree angle is one meter. How long are the other two sides?
- 2. How to draw with isosceles right triangle ruler and gauge
- 3. As shown in the figure, D is a point on the hypotenuse ab of RT △ ABC, and a circle with the diameter of CD intersects the three sides of △ ABC on e, F and g respectively FG, Fe, connection point (1) It is proved that: ∠ EFG = ∠ B; (2) If AC = 2BC = 4 5, D is the midpoint of AE, and the length of CD is calculated
- 4. As shown in the figure, in RT △ ABC, ∠ ACB = 90 °, BC = 3, AC = 4, the vertical bisector De of AB intersects the extension of BC at point E, then the length of CE is () A. 3 Two B. 7 Six C. 25 Six D. 2
- 5. A right triangle has a right angle side of 6m and an oblique side of 12m long. If the height of the hypotenuse is known to be 2m, the length of the other side of the triangle is A right triangle has a right angle side of 6 meters long and an oblique side of 12 meters long. If the height corresponding to the oblique side is known to be 2 meters, what is the length of the other right angle side of the triangle?
- 6. Two right angles of a right triangle are 15cm and 20cm. Take its hypotenuse as the axis of rotation for one cycle to get the revolving body. Find the area of the revolving body Or tell me the formula to find the angle. I forgot what I learned before
- 7. Given that the two right angles of a right triangle are 6 and 8 respectively, the distance from the intersection of the three interior bisectors to the right triangle is equal to ()
- 8. Rotate the right triangle ABC along the right angle sides AB and BC for 1 cycle respectively to get two different cones. Which one is larger and how much larger? I want to explain it carefully. I can't copy it on the Internet
- 9. As shown in the figure, in △ ABC, ∠ a = 150 °, ab = 20cm, AC = 30cm, then the area of △ ABC is () A. 330cm2 B. 450cm2 C. 150cm2 D. 300cm2
- 10. As shown in the figure, the OAB area of isosceles right triangle is 8 square centimeter
- 11. It is known that in △ ABC, D is a point on AB, and Da = DB = DC
- 12. Finding the length of two waists of an isosceles right triangle with known base length of 6
- 13. The waist length of an isosceles right triangle is 2, the distance from the center of gravity of the triangle to the hypotenuse is () A. 2 Two Three B. Two Three C. 2 Three D. 1 Three
- 14. Divide a right triangle into a right triangle and an obtuse triangle with a line
- 15. In a right triangle, how many degrees does the bisector of two acute angles hold? How many degrees? Why?
- 16. How many hypotenuse sides of the right triangle are the sum of the right angles? I know: do not need to deal with 6, as long as consider? +? = 7, using Pythagorean theorem calculation, you can know
- 17. If the area of a right triangle is 18 cm and the root of one right angle side is 3 cm, find the length of the other right angle side and the height of the hypotenuse It's the high length of the hypotenuse!
- 18. Find the area of a right triangle with a hypotenuse length of 25 cm and a right angle side length of 7 cm
- 19. How to find the length of the hypotenuse when we know the length of the two right sides of a right triangle Don't use Pythagorean theorem and function method, stand on the position of fifth grade students, use their method
- 20. It is known that the ratio of two right sides of a right triangle is 1:2, and the length of the hypotenuse is Find the area of this right triangle