Let Xie Jun's integral be x and Galia Mova's integral be y.
x-y=2
x+y= 15
Note: According to the topic, each game will be divided into 1 point (either one side will get 1 and the other side will get 0; Either both sides get 0.5), then the sum of the points of both sides after fifteen sets is 15.
1. In the figure below, ∠ 1 and ∠2 are opposite to each other:
2. As shown in figure 1, the straight line l 1 and l2 are cut by L, and the following reasoning process is correct:
A. because ∠ 1 and ∠2 are complementary, l 1‖l2.
B if ∠ 2 = ∠ 3, then L 1 ∠ L2.
C. if ∠ 1 = ∠ 2, then l 1 ∠ L2.
D if ∠ 1 = ∠ 3, then l 1 ∠ L2.
3. The four angles formed by the intersection of two straight lines meet one of the following conditions respectively, and the condition that the two straight lines cannot be judged to be perpendicular is:
A, two pairs of vertex angles are equal, and b, a pair of vertex angles are complementary.
C, a pair of adjacent complementary angles is equal to d, and three angles are equal.
4, in the plane rectangular coordinate system, point p (-3, 2005) in:
A. first quadrant B. second quadrant C. third quadrant D. fourth quadrant
5. Given a given point A (2, 1), if the intersection point A is perpendicular to the X axis and the vertical foot is C, the coordinates of point C are
A.2 B.(2，0) C.(0， 1) D.( 1，0)
6. Known points A (- 1, 0), B (1, 1), C (0 0,3), D (- 1, 2), E (0, 1), F.
1。
7. In the plane rectangular coordinate system, line segment A'B' is translated from line segment AB. Assuming that the corresponding point of A'(3-2, 1) is A'(3,4) and the corresponding point of B' (4,0), the coordinates of B are:
A.(9，3) B.(- 1，-3) C.(3，-3) D.(-3，- 1)
8, with the following groups of length of line segments as the edge, can form a triangle is:
A.7cm，5cm， 12cm B.6cm，8cm， 15cm
4 cm long, 6 cm wide, 5 cm high, 8 cm wide, 4 cm high and 3 cm high.
9. As shown in Figure 2, assuming ∠ b = ∠ c, the relationship between ∠ADC and ∠AEB is as follows:
a、∠ADC>∠AEB B、∠ADC