Parts of a Triangle: Is it possible...?

Classify a triangle by its sidesUsing the median to calculate the perimeterUsing the theorem: The median of a triangle divides it into two triangles of the same areaMedian in an isosceles triangle - propertiesUsing parallel linesDetermine the size of the given anglesIdentify the greater valueMedian in a right-angled triangleUsing properties of the medianIdentifying the sides in a triangle using median and heightCalculate Angles in QuadrilateralsTrue / falseIdentifying sides in a triangleUsing angles in a triangleIdentifying and defining elementsFinding the size of angles in a triangle
Question 1

Given the triangle ABC.

Dado \( ∢B>90° \) , \( ∢A=20° \)

Is it possible to calculate a ? \( ∢B \)?

If so, find how much the angle is equal to.

\( \)AAABBBCCC20°

Question 2

ABC is a right triangle.

\( ∢A=20° \)

Is it possible to calculate the size of \( ∢C \)?

If so, what is it?

AAACCCBBB20°

Question 3

ABC is an obtuse triangle.

\( ∢C=\frac{1}{2}∢A \)\( \)

\( ∢B=3∢A \)

Is it possible to calculate \( ∢A \)?

If so, then what is it?

AAABBBCCC

Examples with solutions for Parts of a Triangle: Is it possible...?

Exercise #1

Given the triangle ABC.

Dado ∢B>90° , ∢A=20° ∢A=20°

Is it possible to calculate a ? ∢B ∢B ?

If so, find how much the angle is equal to.

AAABBBCCC20°

Video Solution

Answer

No

Exercise #2

ABC is a right triangle.

∢A=20° ∢A=20°

Is it possible to calculate the size of ∢C ∢C ?

If so, what is it?

AAACCCBBB20°

Video Solution

Answer

Yes, 70°.

Exercise #3

ABC is an obtuse triangle.

∢C=12∢A ∢C=\frac{1}{2}∢A

∢B=3∢A ∢B=3∢A

Is it possible to calculate ∢A ∢A ?

If so, then what is it?

AAABBBCCC

Video Solution

Answer

Yes, 40°.