Grade 4 Unit 12 Connect

A/An ..................... is an amount of space between two straight lines.

• number

• letter

• angle

We measure the angles in ........................

• marks

• numbers

• degrees

A/An ............... angle is 90 degrees.

• right

• acute

• obtuse

A/An ................... angle is bigger than a right angle.

• right

• obtuse

• acute

A/An ........................ angle is smaller than a right angle.

• acute

• obtuse

• right

................... is flames and heat from something.

• Fire

• Traffic

• Drought

We're cleaning .............. the beach.

• up

• down

• over

Too much trash can .................. animals and birds .

• help

• harm

• enjoy

.................. is not enough water on the land.

• Traffic

• Pollution

• Drought

...................... is air and land with problems from chemicals.

• Traffic

• Flood

• Pollution