I m in a hurry, begging for an answer, thank you 30

What topic? It seems that I am really in a hurry, and I forgot what the question is.

It's too simple, prove it.

The quadrilateral source BCED is a parallelogram.

On any straight line on a parallelogram, here is af and the focal point of the parallelogram, angle 1 is equal to angle 3, and angles 1 and 2 are opposite the vertex angles. So angle 2 is equal to angle three.

The difficulty here is to prove that BCED is a parallelogram: A=F means that the line segment AC and DF are parallels, which should be called complementary angles or something. Also know that the angle c = the angle d, so BCED is a parallelogram.

I'm not going to tell you, fool wife.

What do you want? Say it.

Eating watermelon brother relationship high heels Phoenix little sun just v gave compound licorice blessing v just ate tiger bone v just ate, Dongfeng scenery and Che Feng and peak fishbone v Chagan Lake sang to v normalized one by one v valley.

Cypress trees are evergreen in winter and summer and their leaves are still green.

Solution: (1): Original formula = 500 200-Vulr 2

2): Substitution: 500 200-20 2=1000-400

Solution: From the sum of the outer angles of the triangle, it can be seen that p+ 3=46°+1;p+ 2=38°+ 4, synapsis yields 2 p+ 3+ 2=46°+38°+ 1+ 4, while 1= 2, 3= 4, 2 p=46°+38°=84°, i.e., p=42°

This is a relatively simple number problem, and the key conditions are actually only: 3, 7, 9 are all taken and 8 8 are left. If these four conditions are met, the other conditions will also coincide.

According to Chen's probability operation formula, you only need to multiply 3, 7, and 9 twice, because 3, 7, 9 are singular numbers, and 8 are even numbers, and the answer will come out.

3 7 9 3 7 9 = 35721 eggs, the calculation is actually very simple, there is no difficulty at all, the key is to master the formula algorithm!

Horizontally: square meters, tons, grams, centimeters, milliliters, square kilometers, seconds.