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Compute the vertex angle of an isosceles triangle given that the base angle ia equal to 40o
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
In triangle mnp, an exterior angle at p is represented by ( 21x + 83 )º .if the two non - adjacent interior angles are represent by ( 9x + 35 )º and ( 10x + 50 )º ,find the value of x
Gọi ( angle BAC angle ABC alpha ) (do ( B C )), ( angle ACH angle DCH beta ), và ( angle BDA angle CDA gamma ).Vì ( AH ) là phân giác của ( angle BAC ), ta có ( angle CAH angle BAH frac{alpha}{2} ).Vì ( AH ) vuông ( BC ), nên ( angle HAC frac{alpha}{2} ).Do đó, ( angle ACH angle HAC frac{alpha}{2} ).Vì ( ACH DCH ), nên ( angle DCH frac{alpha}{2} ).Ta cũng thấy ( angle BDC angle ACH + angle DCH frac{alpha}{2} + frac{alpha}{2} alpha ).Vậy, ( angle BDC angle BAC ).Vì ( CX ) song s...
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Gọi ( \angle BAC = \angle ABC = \alpha ) (do ( B = C )), ( \angle ACH = \angle DCH = \beta ), và ( \angle BDA = \angle CDA = \gamma ).Vì ( AH ) là phân giác của ( \angle BAC ), ta có ( \angle CAH = \angle BAH = \frac{\alpha}{2} ).Vì ( AH ) vuông ( BC ), nên ( \angle HAC = \frac{\alpha}{2} ).Do đó, ( \angle ACH = \angle HAC = \frac{\alpha}{2} ).Vì ( ACH = DCH ), nên ( \angle DCH = \frac{\alpha}{2} ).Ta cũng thấy ( \angle BDC = \angle ACH + \angle DCH = \frac{\alpha}{2} + \frac{\alpha}{2} = \alpha ).Vậy, ( \angle BDC = \angle BAC ).Vì ( CX ) song song ( AB ), nên ( \angle ACX = \angle ABC = \alpha ).Vậy, ( \angle BDC = \angle BAC = \angle ACX ).Do đó, theo điều kiện tương đương của các góc, ta có ( DA ) là phân giác của ( \angle BDC ).
The meansures of angles in a triangle are ( x + 22 )º ,( 3x + 6)º ,( 5x - 10)º
The measure of the greatest angle is ...º
In triangle MNP, an exterior angle at P is represented by ( 21x + 83 )º .If the two non - adjacent interior angles are represent by ( 9x + 35 )º and ( 10x + 50 )º ,find the value of x.
( Các bạn nhớ ghi đề nói gì và giải thích làm sao ra kết quả đó nha)
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
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