Basics of Triangles

To find the area of a triangle, you need to know the _________ and ________.

• sides and sides

• base and height

• bottom and top

• length and width

Find the area of this triangle.

• 240 ft²

• 56 ft²

• 66 ft²

• 120 ft²

Find the area of a triangle with a base of 13 inches and a height of 4 inches. 

• 52 square inches

• 140 square inches

• 26 square inches

• 13 square inches

What is the area of a triangle with a base of 5 cm and a height of 5 cm?

• 25 square cm

• 12.5 square cm

• 13 square cm

• 50 square cm

• m∠C < m∠E
• m∠E > m∠D
• m∠D < m∠C
• m∠E > m ∠C

Which  Venn (Euler) diagram accurately represents the information in the following statement:
If a triangle is equilateral then it is isosceles.

• A

• B

• C

• D

A ​ (a)   triangle has ​ (b)   right angle,

• right

• one

• obtuse

• scalene

• two

• three

• acute

Find the area of the triangle.

• 20 cm²

• 56 cm²

• 28 cm²

• 27 cm²

• 19.8 km²
• 37.8 km²
• 18.9 km²
• 35 km²

• 14.7 in²
• 14.7  cm²
• 28 cm²
• 28 in²