TRIANGLES
It has three equal sides.
EQUILATERAL
1/2
0.50
5 + 2 x 4
13
8 1/2
17/2
100% of 358
358
It has three different sides. NO equal sides.
SCALENE
1/4
0.25
10 - 3 x 2
4
5 2/3
17/3
25% of 60
15
It has one RIGHT interior angle.
RIGHT Triangle
3/4
0.75
(5+2) x 3
21
1 1/9
10/9
10% of 90
9
triangle's AREA =
( BASE x HEIGHT )÷2
45/100
0.45
4 x 3 + 5 x 2
22
11 2/5
57/5
10% of 750
75
The SUM of all INTERIOR angles =
180º
7/10
0.7
(42 + 4) x 8
160
25 1/4
101/4
15% of 20
3