Look at the triangle below.
Calculate the size of angle .
Look at the triangle below.
Calculate the size of angle \( \alpha \).
AB || CD
x = 80
Calculate the size of the \( \alpha \).
AB||CD
x = 50
Calculate the size of angle \( \alpha \).
ΔABC is a scalene triangle with acute angles.
Which angle is larger,
\( ∢C \) or \( ∢A \)?
ABC is an isosceles triangle
(\( ∢A \) is the predominant angle).
Which angle is larger,\( ∢B \) or\( ∢C \)?
Look at the triangle below.
Calculate the size of angle .
103
AB || CD
x = 80
Calculate the size of the .
30
AB||CD
x = 50
Calculate the size of angle .
67
ΔABC is a scalene triangle with acute angles.
Which angle is larger,
or ?
There is no way to know.
ABC is an isosceles triangle
( is the predominant angle).
Which angle is larger, or?
Triangle ABC is an obtuse triangle.
Which angle is larger, \( ∢B \) or \( ∢A \)?
ABC is an equilateral triangle.
Which angle is larger, \( ∢B \) or\( ∢A \)?
The triangle ABC is a right triangle.
Which angle is larger, \( ∢B \) or \( ∢A \)?
AB || CD
Calculate the size of the angle \( \alpha \).
AB || CD
Calculate the size of angle \( \alpha \).
Triangle ABC is an obtuse triangle.
Which angle is larger, or ?
∢B>∢A
ABC is an equilateral triangle.
Which angle is larger, or?
The triangle ABC is a right triangle.
Which angle is larger, or ?
∢A>∢B
AB || CD
Calculate the size of the angle .
43
AB || CD
Calculate the size of angle .
84
Shown below is the triangle ABC.
\( ∢A \) is 3 times greater than the sum of the rest of the angles.
Calculate \( ∢A \).
The triangle ABC is right angled.
\( ∢A=4∢B \)
Calculate angles \( ∢B \) and \( ∢A \).
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.
\( \)
The triangle ABC is isosceles.
\( ∢C=50° \)
Is it possible to calculate the size of angle \( ∢A \)?
If so, then what is it?
ABC is a right triangle.
\( ∢A=20° \)
Is it possible to calculate the size of \( ∢C \)?
If so, what is it?
Shown below is the triangle ABC.
is 3 times greater than the sum of the rest of the angles.
Calculate .
135°
The triangle ABC is right angled.
Calculate angles and .
72 , 18
Given the triangle ABC.
Dado ∢B>90° ,
Is it possible to calculate a ? ?
If so, find how much the angle is equal to.
No
The triangle ABC is isosceles.
Is it possible to calculate the size of angle ?
If so, then what is it?
Yes, 80°
ABC is a right triangle.
Is it possible to calculate the size of ?
If so, what is it?
Yes, 70°.
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?
ABC is an isosceles triangle.
DE is parallel to BC.
Angle A is equal to 3X plus 22.
Express the size of angle DEC.
ABC is an obtuse triangle.
Is it possible to calculate ?
If so, then what is it?
Yes, 40°.
ABC is an isosceles triangle.
DE is parallel to BC.
Angle A is equal to 3X plus 22.
Express the size of angle DEC.