Area of Triangles
Presentation
•
Mathematics
•
10th Grade
•
Medium
Standards-aligned
Maman Firmansyah
Used 52+ times
FREE Resource
6 Slides • 5 Questions
1
Area of a Triangle
Using Sine Law
2
Area of a right triangle
Area = 1/2 x base x height
Area = 1/2 x AC x BC
Area = 1/2 x b x a
3
Multiple Choice
If BC is the base of the given triangle, which of the followings is the height?
4
Multiple Choice
If a is the base of the given triangle, which of the followings is the height?
5
Area of any triangle
Area = 1/2 ab sin C
where a, b are two sides and angle C is their INCLUDED angle
6
Multiple Choice
Which include angle you have to choose to determine the area of XYZ triangle with the given sides?
7
Multiple Choice
Which of the followings is true to find the area of ABC triangle?
8
Multiple Choice
Which of the followings is true to calculate the area of XYZ triangle?
9
Find the area of XYZ
Area = 1/2 xy sin Z
Area = 1/2 x 9 x 7 x sin 320
Area ≈16.6924568...
Area = 16.7 (correct to 1 decimal place)
10
Find the length of PQ if the area of triangle PQR is 70.5 cm2.
Area = 1/2 rq sin P
70.5 = 1/2 x r x 16 x sin 360
r = 70.5 / (8 sin 360)
r ≈14.992720...
r = 15 cm
11
Area of a Triangle
Using Sine Law
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