A graph, the area of triangle ABC is 1, BD: DC = 2:1, e is the midpoint of AC, ad and be intersect at P, then the area of quadrilateral pdce is___ Better have a picture

A graph, the area of triangle ABC is 1, BD: DC = 2:1, e is the midpoint of AC, ad and be intersect at P, then the area of quadrilateral pdce is___ Better have a picture

Answer: 1 / 6
It's easy to draw your own pattern
Analysis: SADB = 2 / 3, SADC = 1 / 3, sbce = 1 / 2, sabe = 1 / 2
Therefore, it can be concluded that SABP = 1 / 3, sbpd = 1 / 3, SAP = 1 / 6, spdce = 1 / 6
Note: Sxxx represents the area of triangle XXX

The greatest common factor of these two numbers is 14, and the least common multiple is 84

84÷14＝6
6＝1×6＝2×3
There are two groups of such numbers
（1）
1×14＝14
6×14＝84
（2）
2×14＝28
3×14＝42
Can it solve your problem?

If the perimeter ratio of two similar triangles is 2:3, then the ratio of their corresponding sides is the ratio of their corresponding angular bisectors, the ratio of their corresponding median lines, and the ratio of their corresponding midlines
What's the area ratio

If the perimeter ratio of two similar triangles is 2:3, then their corresponding side ratio is 2:3, corresponding angle bisector ratio is 2:3, corresponding median line ratio is 2:3, corresponding median line ratio is 2:3

The greatest common factor of the two numbers is 9, and the least common multiple is 243______ And______ ．

9 = 3 × 3243 = 3 × 3 × 3 × 3, these two numbers are 9 and 243, so the answer is: 9243

Given the line L1: x + Y-1 = 0, L2: 2x-y + 3 = 0, find the equation of the line L2 about L1 symmetric L
Please write the process

What's the plural of half~

In English, the plural of nouns ending with F is usually changed into ve and then s, which is different from common nouns

Find the axis of symmetry and vertex coordinates of y = x2-5x-6 of parabola

Y = x & # 178; - 5x-6 = x & # 178; - 2 × 5 / 2x + 25 / 4-25 / 4-6 = (X-5 / 2) & # 178; - 49 / 4. So the axis of symmetry of the parabola is x = 5 / 2 and the vertex is (5 / 2, - 49 / 4)

What is the 10000 power of 2?
0.0112 =?

The 10000 power of 2 is a number of more than 3100 digits, which can be multiplied by 0.0112. We can only write an approximate value of 2.23 * 10 ^ 3006

The even function f (x) defined on R is a monotone increasing function in the interval [0, + ∞). If f (1) ＜ f (LNX), then the value range of X______ ．

① When LNX > 0, f (1) < f (LNX) is equivalent to 1 < LNX because f (x) is a monotone increasing function in the interval [0, + ∞), and the solution is x > E; ② When LNX ＜ 0, - LNX ＞ 0, combined with the function f (x) is defined on R, we can get that f (1) ＜ f (LNX) is equivalent to f (1) ＜ f (- LNX), and then from the function f (x) is a monotone increasing function in the interval [0, + ∞), we can get 1 ＜ - LNX, that is LNX ＜ - 1, and the solution is 0 ＜ x ＜ 1E ）∪（e，+∞）．

1. Given a + C-7 = 0, find the square of (a + b) - 2A (B-C) + 2B (C-B) + (C-B)
2. Let a, B, C, d be integers, and M = the square of a + the square of B, n = the square of C + the square of D. try to express Mn as the sum of the squares of two integers
3. It is known that a and B are natural numbers, and the square of a - the square of B = 45

1. The formula: A ^ 2 + 2Ab + B ^ - 2Ab + 2Ac + 2bc-2b ^ 2 + C ^ 2-abc + B ^ 2 is combined to get a ^ 2 + 2Ac + C ^ 2 = (a + C) ^ 2 = 7 ^ 2 = 49