Transcript Triangles: A Guided PowerPoint Presentation

Triangles
A Guided PowerPoint
Presentation
5cm
94º
15cm
10cm
1.
A SCALENE TRIANGLE
and
AN OBTUSE TRIANGLE
The reason is: there is an obtuse
angle at the top part of the
triangle, and all three sides have
different measurements.
Obtuse angle
2.
3in.
3in.
The Right Triangle
or
An Isosceles Triangle
This triangle has a right angle
and two sides that are congruent.
3.
Right again, and also Scalene.
Why?
The rectangle in the lower left
angle makes it RIGHT. Can
you see that all three sides are
different in length?
What could this be?
• Two sides are congruent and all the angles are smaller than 90º.
4.
It is a scalene triangle and an...
Acute Triangle!!!!
? ? ? ? ? ? ?
5.
Acute and Equilateral
because…..
All sides are congruent and all
the angles are 60º.
The complete triangle on
the right has 3 angles. If
we cut off two angles and
line them up to the third
angle, it creates a 180º
angle.
Remember, three angles
of every triangle equal
180º.
a
b
a
b
What type is this one??
6.
Four sides can’t be a triangle. It
has to be a quadrilateral.