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Chapter 7.2 - Triangles & Trapezoids
Types of Triangles
Equilateral Triangles - all three sides are congruent (3 angles will be congruent, too)
Isosceles Triangles - at least two sides are congruent (2 angles will be congruent, too)
Scalene Triangles - no congruent sides (no angles will be congruent, either)
Acute Triangles - all three angles are acute (less than 90 degrees)
Right Triangles - one right angle (90 degrees)
Obtuse Triangles - one obtuse angle (more than 90 degrees)
Does this image make any sense? Hopefuly the video will help clarify.
Classify triangles
Lesson #1 Video Assignment
Finding the area of a triangle is easy if you have the formula... and you do!
(look below)
Find the area of a trapezoid is just as easy... just use the formula.
(The parallel sides are always the bases.
Area of triangles and trapezoids
Lesson #2 Video Assignment
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