1 tháng 12 2023 lúc 20:26
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given an angle xOy(xOy<90),the point A is on the Ox ray and the point B is on the Oy ray such that OA=OB, the point C is on the Ax ray anh the point D is on the By raysuch that AC=BD. If AD=7cm then BC=.....cm
27 tháng 11 2023 lúc 19:06
true or false
1, there is only one midpoint for any given line segment
2, if AB+BC=AD then B lies between A and D
3, if AB+BC=AC then B is the midpoint of AC
4, If C is the midpoint of AB then AC=BC
5, if B belongs to Ox, A belongs to Oy, Ox and Oy are opposite then O is the midpoint of AB
Given two adjacent angles AOB and BOC. The sum of measure of them is equal to 160o and the measure of angle AOB is equal to 7 times the measure of angle BOC
a)Find the measure of each angle
b)Inside angle AOC, draw ray OD such that angle COD=90o. Prove that OD is the bisector of angle BOA.
c)Draw the opposite ray OC' of ray OC. Find the measure of 2 angles AOC and BOC' then compare them
Given two adjacent angles AOB and BOC. The sum of measure of them is equal to 160o and the measure of angle AOB is equal to 7 times the measure of angle BOC
a)Find the measure of each angle
b)Inside angle AOC, draw ray OD such that angle COD=90o. Prove that OD is the bisector of angle BOA.
c)Draw the opposite ray OC' of ray OC. Find the measure of 2 angles AOC and BOC' then compare them
For Xoy right angle, point A on Ox ray, ray Oy.lay point B on point E on the beam of rays Ox, point F on the beam of rays Oy puzzle that OE = OB, OF = OA.
a, prove that AB = EF and EF square AB
b, Call M, N wrong turn is the midpoint of AB and EF. Prove that triangle square omn weight
Cho tam giác ABC biết: AB 3cm; AC 7cm; BC 8cm. Góc lớn nhất là A. A B. B C. C D. D
Đọc tiếp
Cho tam giác ABC biết: AB = 3cm; AC = 7cm; BC = 8cm. Góc lớn nhất là
A. A B. B
C. C
D. D
Divide \(285\) into three parts such that the second part is \(\frac{1}{4}\) of the third part and the ratio between the first and the second part is \(4:3\). The first part is .....
Given the Triangle ABC and the point M inside the triangle (M don't belong on any sides of triangle).let I be the intersection point of the line BM and the side AC
a, compare MA to MI+MB,then prove that MA +MB<IB+IA
b, compare IB to IC+CB, then prove that IB+IA<CA+CB
c, Demonstrate the inequality MA+MB<CA+CB