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The degree of the top angle of an isosceles triangle is four times that of the base angle. How many degrees are the base angle and the top angle of the isosceles triangle? What triangle is this?
If the base angle is x and the vertex angle is 4x, then x + X + 4x = 180 ° 6x = 180 ° x = 30 ° 30 ° × 4 = 120 ° so it is an obtuse triangle
An isosceles triangle has a top angle of 50 degrees and a base angle of 50 degrees______ Degree
（180°-50°）÷2，
=130°÷2，
=65°．
A: one of its base angles is 65 degrees
So the answer is: 65
The top angle of an isosceles triangle is 120 degrees. What is its foot
（180-120）/2=30°
The top angle of an isosceles triangle is 80 ° and its base angle is______ Degree, this is a______ Triangle
（180°-80°）÷2，
=100°÷2，
=50°；
Then the triangle is an acute triangle;
A: the base angle of this triangle is 50 ° and this is an acute triangle
So the answer is: 50, acute angle
For an isosceles triangle, the degree ratio of the top angle to the base angle is 2:3, and the vertex angle is 2:3______ Degree
2+3+3=8，
180×2
8 = 45 (degree);
A: the vertex angle is 45 degrees;
So the answer is: 45
For an isosceles triangle, the ratio of its top angle to its base angle is 5:2, and the top angle of this isosceles triangle is______ Degree
5+2+2=9，
The apex angle is 180 °× 5
9=100°，
A: the top angle of this isosceles triangle is 100 degrees;
So the answer is: 100
The degree ratio between the base and the vertex angle of an isosceles triangle is 1:2. How many degrees is its vertex angle
The top angle is 90 degrees and the base angle is 45 degrees
The degree of the vertex angle of an isosceles triangle is 4 times of that of the base. How many degrees are the base angle and the top angle of the isosceles triangle!
Set base angle X
Then 4x + 2x = 180 degrees, x = 30 degrees
The base angle is 30 degrees and the top angle is 120 degrees
Use a ruler and a compass to make a straight line and divide triangle ABC into two isosceles triangles There are three small questions 1. Right triangle ABC 2.∠A=24°,∠C=84° 3.∠C=104°,∠B=52° Please explain the practice and the vertex degrees of the two isosceles triangles
1. The length of the center line of the hypotenuse is equal to half of the hypotenuse
2. Divide angle B into 24 degrees and 48 degrees. 24 is the same as angle a, the vertex angle is 132, and then the other has 48, 48, 84 (vertex). These two isosceles triangles
3. No solution
Given the triangle ABC, angle a = 90 degrees, angle B = 67.5 degrees, divide this triangle into two isosceles triangles (please use the following spare diagram to divide all the It is not necessary to explain the reason, but the degree of two equal angles should be marked in the figure;
If the center line ad on the BC side is made, then ⊿ ADB and ⊿ ADC are isosceles triangles. The base angles are ∠ DBA = ∠ DAB = 67.5 ° and ∠ DAC = ∠ DCA = 22.5 ° respectively. The reason is that the center line on the hypotenuse of a right triangle is equal to half of the hypotenuse
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