Geometry 4-1 & 4-2

Front

What do the angles in an equilateral triangle measure?

Back

60°, 60°, 60°

Front

What is the side of a right triangle across from the right angle called?

Back

Hypotenuse

Front

If two sides of a triangle are congruent, then the angles opposite those sides are congruent. What is this property called?

Back

Isosceles Triangle Theorem

Front

Find the value of x if x + 10 = 51.

Back

x = 41

Front

Find the length of the missing side of a right triangle if one side is 5 cm and the hypotenuse is 13 cm.

Back

13 cm

Front

What is the sum of the interior angles of a triangle?

Back

180°

Front

In a right triangle, if one angle measures 30°, what is the measure of the other non-right angle?

Back

60°

Front

What do you call a triangle with all sides of different lengths?

Back

Scalene Triangle

Front

What is the Pythagorean theorem?

Back

a² + b² = c², where c is the hypotenuse.

Front

What is the formula for the area of a triangle?

Back

Area = 1/2 * base * height