Bellwork

Front

What is the value of x if x + 2 = 53?

Back

51

Front

What is the measure of angle 2 if angle 1 is 50° and they are supplementary?

Back

130°

Front

What is the length of DF if the perimeter of triangle DFE is 20 and DE = 6, EF = 6?

Back

8

Front

Find the values of m and n if m + n = 63 and m - n = 9.

Back

36, 27

Front

If an isosceles triangle has a base angle measuring 40°, what is the measure of the vertex angle?

Back

100°

Front

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

Back

180°

Front

What is the formula for the area of a triangle?

Back

Area = 1/2 * base * height

Front

What is the Pythagorean theorem?

Back

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

Front

What is the definition of a supplementary angle?

Back

Two angles that add up to 180°.

Front

What is the definition of an isosceles triangle?

Back

A triangle with at least two equal sides.